ASTROSAT CZTI

Data Quality Report

Orbit 54998

Creation date: 2025-11-28T11:09:56.417315
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_014T01_9000006528_54998cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54998cztM0_level2_quad_clean.evt
Size (bytes)585,665,28060,096,960
Size558.5 MB 57.3 MB
Events in quadrant A3,828,847461,066
Events in quadrant B3,176,282529,960
Events in quadrant C3,157,053465,630
Events in quadrant D11,115,2341,537

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185643622
B0141401035
C0143161258
D0421425646

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011612
B01157
C01166
D011612

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51323586.975838%
B52331723.286834%
C52082224.262673%
D5030501899.761431%

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 6339 5243 173 173 2.73% 3.30%
B 6835 5355 44 44 0.64% 0.82%
C 6698 5327 131 131 1.96% 2.46%
D 6363 5029 3492 3492 54.88% 69.44%

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 14 806729 5761.72 561 548 139.9
A 15 32 782164 5586.15 561 548 139.9
A 11 3 22348 155.8 561 548 139.9
B 5 236 622059 5002.62 572 551 124.2
B 5 185 110950 888.62 572 551 124.2
B 10 245 82258 657.67 572 551 124.2
C 9 38 593247 3855.51 559 554 153.7
C 14 254 105917 685.39 559 554 153.7
C 6 223 104054 673.27 559 554 153.7
D 15 94 9542123 388533.07 81 77 24.6
D 2 62 809330 32951.17 81 77 24.6
D 15 93 98096 3991.14 81 77 24.6

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