ASTROSAT CZTI

Data Quality Report

Orbit 52512

Creation date: 2025-06-13T09:59:25.649363
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/AS1A13_037T01_9000006476_52512cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52512cztM0_level2_quad_clean.evt
Size (bytes)27,216,0002,597,760
Size26.0 MB 2.5 MB
Events in quadrant A93,98719,316
Events in quadrant B392,3194,542
Events in quadrant C278,36215,245
Events in quadrant D220,33114,538

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B066
C011
D077

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880376
B028291512
C01635634
D01571749

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01612
B084
C0159
D01711

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25210.396825%
B21911552.511416%
C2562911.328125%
D245135.306122%

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 279 267 0 0 0.00% 0.00%
B 269 221 112 112 41.64% 50.68%
C 293 276 37 37 12.63% 13.41%
D 283 260 18 18 6.36% 6.92%

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 13 254 417 50.47 23 23 7.8
A 7 160 396 47.78 23 23 7.8
A 4 3 356 42.66 23 23 7.8
B 10 44 316051 62915.29 14 14 5.0
B 4 171 7236 1437.72 14 14 5.0
B 10 254 4719 936.65 14 14 5.0
C 15 224 131324 16766.37 22 21 7.8
C 13 3 31957 4077.98 22 21 7.8
C 15 233 27990 3571.42 22 21 7.8
D 15 93 45870 6031.92 21 20 7.6
D 7 96 36589 4810.93 21 20 7.6
D 2 153 28001 3681.12 21 20 7.6

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