ASTROSAT CZTI

Data Quality Report

Orbit 53522

Creation date: 2025-08-21T13:49:30.301706
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_004T04_9000006500_53522cztM0_level2.fits modeM0/AS1A14_004T04_9000006500_53522cztM0_level2_quad_clean.evt
Size (bytes)1,496,905,920142,488,000
Size1.4 GB 135.9 MB
Events in quadrant A11,727,2911,025,404
Events in quadrant B7,100,3781,201,743
Events in quadrant C27,866,270255,848
Events in quadrant D7,790,2211,001,601

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02420
B02420
C02420
D02420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431711
B0294021
C0906732
D0319301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11994148012.339503%
B119952482.067528%
C11994947578.997832%
D119944653.876938%

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 12429 11996 1120 1120 9.01% 9.34%
B 12430 11997 86 86 0.69% 0.72%
C 12429 11995 8944 8944 71.96% 74.56%
D 12429 11996 374 374 3.01% 3.12%

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 62 5042313 16164.66 1256 1223 311.9
A 3 63 762843 2442.2 1256 1223 311.9
A 15 174 655650 2098.47 1256 1223 311.9
B 2 249 1272404 4673.51 1285 1238 272.0
B 5 185 135008 491.81 1285 1238 272.0
B 7 252 85646 310.33 1285 1238 272.0
C 1 241 17399620 106726.56 589 584 163.0
C 7 64 3893206 23877.54 589 584 163.0
C 15 224 2758397 16916.56 589 584 163.0
D 10 172 1035665 2925.81 1255 1201 353.6
D 12 18 322941 909.99 1255 1201 353.6
D 13 153 254158 715.45 1255 1201 353.6

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