ASTROSAT CZTI

Data Quality Report

Orbit 53178

Creation date: 2025-07-31T15:22:44.938912
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_53178cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53178cztM0_level2_quad_clean.evt
Size (bytes)842,901,12075,214,080
Size803.9 MB 71.7 MB
Events in quadrant A4,196,257594,839
Events in quadrant B4,682,354633,919
Events in quadrant C5,615,069576,151
Events in quadrant D16,215,96429,518

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170732
B0183882
C0211432
D0525267

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63434246.684534%
B63434917.740817%
C63434416.952546%
D6342604695.332703%

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 7508 6343 358 358 4.77% 5.64%
B 7508 6344 400 400 5.33% 6.31%
C 7508 6344 402 402 5.35% 6.34%
D 7506 6341 5867 5867 78.16% 92.52%

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 759887 4698.02 637 621 161.6
A 7 206 314214 1940.38 637 621 161.6
A 15 174 187247 1154.76 637 621 161.6
B 4 81 891748 6620.52 643 621 134.6
B 10 191 817931 6072.1 643 621 134.6
B 10 254 161773 1197.26 643 621 134.6
C 15 224 1221804 6919.22 636 630 176.5
C 0 240 833095 4716.78 636 630 176.5
C 14 95 231836 1310.02 636 630 176.5
D 15 125 15029418 253997.16 200 190 59.2
D 2 249 67145 1131.55 200 190 59.2
D 13 170 64017 1078.69 200 190 59.2

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