ASTROSAT CZTI

Data Quality Report

Orbit 53180

Creation date: 2025-07-29T12:17:49.717518
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_011T06_9000006490_53180cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53180cztM0_level2_quad_clean.evt
Size (bytes)1,610,907,840134,706,240
Size1.5 GB 128.5 MB
Events in quadrant A6,249,8991,136,098
Events in quadrant B9,692,0131,129,424
Events in quadrant C12,811,276936,671
Events in quadrant D29,977,60769,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02380
B02380
C02380
D02380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267713
B0369413
C0462653
D0971133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116541371.175562%
B11654128110.991934%
C11654197516.946971%
D116541100294.405354%

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 14104 11656 86 86 0.61% 0.74%
B 14104 11656 1032 1032 7.32% 8.85%
C 14104 11656 1934 1934 13.71% 16.59%
D 14104 11654 10874 10874 77.10% 93.31%

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 3 14 330264 1090.07 1201 1173 301.9
A 8 249 217741 717.35 1201 1173 301.9
A 0 8 217467 716.44 1201 1173 301.9
B 10 191 1747108 7231.23 1154 1117 241.5
B 2 249 1408228 5827.72 1154 1117 241.5
B 4 81 1394848 5772.3 1154 1117 241.5
C 0 240 4601904 14950.59 1106 1098 307.7
C 15 224 2397491 7787.22 1106 1098 307.7
C 14 95 350455 1135.25 1106 1098 307.7
D 15 125 27271773 207053.85 444 423 131.7
D 2 249 359530 2726.47 444 423 131.7
D 2 153 117109 885.92 444 423 131.7

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