ASTROSAT CZTI

Data Quality Report

Orbit 20210222_A10_115T03_9000004202_level2

Creation date: 2025-12-20T18:52:40.249290
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/AS1A10_115T03_9000004202cztM0_level2.fits modeM0/AS1A10_115T03_9000004202cztM0_level2_quad_clean.evt
Size (bytes)298,368,000296,838,720
Size284.5 MB 283.1 MB
Events in quadrant A1,840,9981,797,061
Events in quadrant B1,748,9241,777,770
Events in quadrant C1,724,4201,672,954
Events in quadrant D1,544,9621,566,315

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06440
B06440
C06440
D06440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0654900
B0755340
C01039850
D0903580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A316482240.707786%
B316488912.815344%
C3164826858.483948%
D3164820226.389029%

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 33798 31648 0 0 0.00% 0.00%
B 33798 31645 0 0 0.00% 0.00%
C 33798 31648 0 0 0.00% 0.00%
D 33798 31629 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 1564 9.1 480 449 122.6
A 7 110 1433 8.03 480 449 122.6
A 9 19 1429 8.0 480 449 122.6
B 2 9 1471 11.3 460 437 91.5
B 2 8 1148 7.77 460 437 91.5
B 14 254 1128 7.55 460 437 91.5
C 12 241 1258 7.09 455 425 117.5
C 3 126 1194 6.54 455 425 117.5
C 9 233 1168 6.32 455 425 117.5
D 4 246 1194 6.7 440 401 118.3
D 15 46 1145 6.29 440 401 118.3
D 3 14 1135 6.21 440 401 118.3

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