ASTROSAT CZTI

Data Quality Report

Orbit 20250809_C09_011T09_9000006494_level2

Creation date: 2025-08-19T07:27:00.613773
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/AS1C09_011T09_9000006494cztM0_level2.fits modeM0/AS1C09_011T09_9000006494cztM0_level2_quad_clean.evt
Size (bytes)2,841,721,9201,046,162,880
Size2.6 GB 997.7 MB
Events in quadrant A18,106,3101,949,424
Events in quadrant B16,225,0921,788,710
Events in quadrant C10,629,848479,232
Events in quadrant D15,212,2361,710,587

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076350
B076330
C076330
D076350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010177390
B013155050
C024479820
D011440560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04310
B04310
C04310
D04310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A375793221425.892074%
B3757295612214.936829%
C37524022918761.077444%
D375638272967.266570%

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 436412 375572 0 0 0.00% 0.00%
B 436413 374252 0 0 0.00% 0.00%
C 436412 361247 0 0 0.00% 0.00%
D 436414 374925 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 21250 10.6 4779 4418 1588.1
A 9 255 19636 9.58 4779 4418 1588.1
A 14 204 17162 8.02 4779 4418 1588.1
B 2 9 19107 14.99 4313 4096 1001.3
B 2 8 17244 13.13 4313 4096 1001.3
B 9 173 13759 9.65 4313 4096 1001.3
C 2 31 8470 6.01 2845 2599 977.7
C 3 202 8410 5.94 2845 2599 977.7
C 7 221 8352 5.88 2845 2599 977.7
D 6 218 20339 11.01 4358 3860 1497.0
D 6 207 13564 6.48 4358 3860 1497.0
D 6 223 13555 6.48 4358 3860 1497.0

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