ASTROSAT CZTI

Data Quality Report

Orbit 20161111_G06_132T01_9000000784_level2

Creation date: 2025-11-07T16:25:05.118365
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/AS1G06_132T01_9000000784cztM0_level2.fits modeM0/AS1G06_132T01_9000000784cztM0_level2_quad_clean.evt
Size (bytes)119,540,160147,818,880
Size114.0 MB 141.0 MB
Events in quadrant A698,276911,020
Events in quadrant B679,874914,649
Events in quadrant C692,524883,235
Events in quadrant D594,736814,063

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0298070
B0294150
C0276270
D0295070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B02780
C03330
D03400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140028700047400140024523784238
B1140028700047400140024523784238
C1140028700047400140024523784238
D1140028700047400140024523784238

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136582481.815786%
B136752421.769653%
C136361260.924025%
D136462932.147149%

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 22575 14530 0 0 0.00% 0.00%
B 22576 14488 0 0 0.00% 0.00%
C 22577 14430 0 0 0.00% 0.00%
D 22577 14423 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 14 188 691 10.74 181 169 48.6
A 0 29 657 10.04 181 169 48.6
A 7 110 603 8.93 181 169 48.6
B 2 9 598 11.26 178 170 38.0
B 12 226 550 9.99 178 170 38.0
B 14 254 518 9.15 178 170 38.0
C 1 80 547 7.59 182 167 50.1
C 1 81 520 7.05 182 167 50.1
C 3 126 506 6.77 182 167 50.1
D 7 5 469 6.59 169 153 48.0
D 3 14 469 6.59 169 153 48.0
D 6 231 437 5.92 169 153 48.0

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