ASTROSAT CZTI

Data Quality Report

Orbit 51911

Creation date: 2025-05-03T23:21:25.723548
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_011T05_9000006466_51911cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51911cztM0_level2_quad_clean.evt
Size (bytes)951,992,64067,299,840
Size907.9 MB 64.2 MB
Events in quadrant A7,446,902495,882
Events in quadrant B11,028,825323,740
Events in quadrant C7,530,979435,528
Events in quadrant D8,755,224349,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0264411
B0370121
C0266251
D0302811

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6195115318.611784%
B6195344055.528652%
C6195154624.955609%
D6196220935.652034%

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 7009 6195 919 919 13.11% 14.83%
B 7010 6196 2669 2669 38.07% 43.08%
C 7010 6195 1231 1231 17.56% 19.87%
D 7011 6196 1802 1802 25.70% 29.08%

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 12 3 2256106 14855.22 602 587 151.8
A 7 64 1027964 6766.48 602 587 151.8
A 3 95 938330 6176.13 602 587 151.8
B 12 32 7953342 78942.83 472 457 100.7
B 5 32 365395 3622.49 472 457 100.7
B 5 172 329518 3266.36 472 457 100.7
C 15 158 3535522 21930.54 585 580 161.2
C 0 193 263081 1628.54 585 580 161.2
C 13 3 233524 1445.17 585 580 161.2
D 12 17 2816152 19879.57 489 467 141.6
D 2 172 1239632 8748.87 489 467 141.6
D 3 12 1213590 8565.01 489 467 141.6

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