ASTROSAT CZTI

Data Quality Report

Orbit 54159

Creation date: 2025-10-02T07:12:48.953114
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_012T01_9000006512_54159cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54159cztM0_level2_quad_clean.evt
Size (bytes)576,524,160122,688,000
Size549.8 MB 117.0 MB
Events in quadrant A5,478,506755,506
Events in quadrant B4,746,745865,235
Events in quadrant C4,703,202782,554
Events in quadrant D5,743,850713,263

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225170
B0203940
C0204690
D0234290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A86155806.732443%
B86161902.205200%
C8616850.986537%
D86163083.574745%

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 8615 8615 460 460 5.34% 5.34%
B 8616 8616 88 88 1.02% 1.02%
C 8616 8616 23 23 0.27% 0.27%
D 8616 8616 295 295 3.42% 3.42%

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 7 29 1123619 5079.74 891 869 221.0
A 0 8 430215 1942.52 891 869 221.0
A 3 14 123470 554.69 891 869 221.0
B 4 171 333195 1722.09 908 876 193.0
B 5 236 178530 920.61 908 876 193.0
B 7 0 121018 622.58 908 876 193.0
C 9 38 793001 3209.35 900 891 246.8
C 12 2 77359 309.82 900 891 246.8
C 14 254 75554 302.51 900 891 246.8
D 8 176 983926 3951.76 884 846 248.8
D 3 12 800574 3214.73 884 846 248.8
D 3 176 81058 322.43 884 846 248.8

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