ASTROSAT CZTI

Data Quality Report

Orbit 53828

Creation date: 2025-09-10T02:27:22.465887
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/AS1A14_022T04_9000006506_53828cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53828cztM0_level2_quad_clean.evt
Size (bytes)1,881,984,960302,469,120
Size1.8 GB 288.5 MB
Events in quadrant A10,642,9782,096,027
Events in quadrant B11,636,8982,198,475
Events in quadrant C27,488,8251,515,859
Events in quadrant D18,185,9081,821,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481713
B0507103
C0968548
D0691773

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04500
B04500
C04500
D04500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A221592741.236518%
B221604802.166065%
C22159496222.392707%
D2215912985.857665%

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 23904 22162 109 109 0.46% 0.49%
B 23905 22163 142 142 0.59% 0.64%
C 23903 22159 4508 4508 18.86% 20.34%
D 23904 22162 1222 1222 5.11% 5.51%

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 4 249 393050 671.67 2375 2321 581.7
A 0 8 343667 586.78 2375 2321 581.7
A 8 6 295386 503.79 2375 2321 581.7
B 8 234 1082656 2143.91 2344 2255 503.9
B 5 185 234953 461.76 2344 2255 503.9
B 7 0 185534 363.69 2344 2255 503.9
C 1 241 7057646 12291.98 2084 2068 574.0
C 15 224 6111885 10644.31 2084 2068 574.0
C 15 157 2300325 4003.94 2084 2068 574.0
D 15 93 2118137 3292.04 2275 2174 642.8
D 2 153 1499684 2329.84 2275 2174 642.8
D 10 172 1160077 1801.48 2275 2174 642.8

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