ASTROSAT CZTI

Data Quality Report

Orbit 20160224_T01_072T05_9000000344_level2

Creation date: 2025-10-27T21:43:57.174209
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T01_072T05_9000000344cztM0_level2.fits modeM0/AS1T01_072T05_9000000344cztM0_level2_quad_clean.evt
Size (bytes)1,097,616,9601,079,899,200
Size1.0 GB 1.0 GB
Events in quadrant A6,490,8166,199,319
Events in quadrant B6,377,6586,406,656
Events in quadrant C6,443,6826,131,381
Events in quadrant D5,566,5795,607,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024400
B024540
C024380
D024440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02504310
B02538600
C02511990
D02561620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140710725531688140707423584302
B1140710725531688140707423584302
C1140710725531688140707423584302
D1140710725531688140707423584302

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12191012261.005660%
B12204814861.217554%
C1220399640.789911%
D12205111180.916011%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 157727 122496 0 0 0.00% 0.00%
B 157728 122680 0 0 0.00% 0.00%
C 157727 122661 0 0 0.00% 0.00%
D 157728 122648 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 29 6012 10.15 1682 1559 438.9
A 7 110 5778 9.61 1682 1559 438.9
A 14 188 5238 8.38 1682 1559 438.9
B 2 9 5649 12.26 1676 1585 331.6
B 12 226 4922 10.06 1676 1585 331.6
B 5 128 4410 8.52 1676 1585 331.6
C 9 242 4251 5.86 1707 1569 458.0
C 9 188 4220 5.79 1707 1569 458.0
C 3 158 4204 5.75 1707 1569 458.0
D 3 14 4280 6.43 1588 1437 442.3
D 11 82 4105 6.03 1588 1437 442.3
D 1 19 4061 5.93 1588 1437 442.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter