ASTROSAT CZTI

Data Quality Report

Orbit 54597

Creation date: 2025-11-01T11:38:05.532741
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_066T07_9000006522_54597cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54597cztM0_level2_quad_clean.evt
Size (bytes)755,115,840159,456,960
Size720.1 MB 152.1 MB
Events in quadrant A5,984,0631,044,605
Events in quadrant B6,275,3041,118,465
Events in quadrant C7,019,710970,057
Events in quadrant D7,795,319911,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256350
B0265340
C0290287
D0310043

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113241881.660191%
B113241651.457082%
C113234013.541464%
D113235084.486444%

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 11324 11324 155 155 1.37% 1.37%
B 11324 11324 63 63 0.56% 0.56%
C 11324 11324 393 393 3.47% 3.47%
D 11324 11323 468 468 4.13% 4.13%

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 11 3 437648 1456.19 1205 1173 299.7
A 3 14 326774 1086.28 1205 1173 299.7
A 0 8 196010 650.02 1205 1173 299.7
B 7 0 637306 2492.32 1190 1145 255.2
B 1 207 202400 788.47 1190 1145 255.2
B 10 14 181364 706.05 1190 1145 255.2
C 4 5 1073157 3380.43 1161 1154 317.1
C 14 96 630440 1984.37 1161 1154 317.1
C 13 3 227713 714.42 1161 1154 317.1
D 2 62 2191190 6762.5 1152 1103 323.9
D 2 172 410842 1265.18 1152 1103 323.9
D 15 94 147070 450.71 1152 1103 323.9

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