ASTROSAT CZTI

Data Quality Report

Orbit 20201115_A09_038T35_9000004006_level2

Creation date: 2025-12-17T17:27:26.267966
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/AS1A09_038T35_9000004006cztM0_level2.fits modeM0/AS1A09_038T35_9000004006cztM0_level2_quad_clean.evt
Size (bytes)93,608,640113,938,560
Size89.3 MB 108.7 MB
Events in quadrant A573,834730,165
Events in quadrant B541,812725,947
Events in quadrant C558,710688,988
Events in quadrant D490,074634,448

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0214890
B0251510
C0222340
D0219350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96611671.728600%
B96614604.761412%
C96611871.935617%
D96611711.770003%

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 11356 9661 0 0 0.00% 0.00%
B 11356 9659 0 0 0.00% 0.00%
C 11356 9661 0 0 0.00% 0.00%
D 11356 9661 0 0 0.00% 0.00%

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 0 29 568 10.96 149 141 39.0
A 7 110 503 9.29 149 141 39.0
A 0 30 455 8.06 149 141 39.0
B 2 9 458 10.56 143 136 30.5
B 2 8 395 8.49 143 136 30.5
B 5 128 372 7.74 143 136 30.5
C 3 126 379 6.17 147 138 39.0
C 12 241 376 6.09 147 138 39.0
C 7 111 374 6.04 147 138 39.0
D 3 14 389 6.73 139 127 39.0
D 10 189 382 6.55 139 127 39.0
D 7 3 362 6.03 139 127 39.0

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