ASTROSAT CZTI

Data Quality Report

Orbit 20210824_C06_010T03_9000004658_level2

Creation date: 2025-12-28T09:53:45.364806
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/AS1C06_010T03_9000004658cztM0_level2.fits modeM0/AS1C06_010T03_9000004658cztM0_level2_quad_clean.evt
Size (bytes)106,488,000142,352,640
Size101.6 MB 135.8 MB
Events in quadrant A681,8741,012,449
Events in quadrant B609,736919,094
Events in quadrant C623,816887,939
Events in quadrant D512,710696,348

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260210
B0434300
C0391270
D0492610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114931291.122422%
B11487129311.256203%
C11481128611.201115%
D11479289825.246102%

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 12915 11492 0 0 0.00% 0.00%
B 12915 11483 0 0 0.00% 0.00%
C 12915 11478 0 0 0.00% 0.00%
D 12915 11423 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 29 690 11.58 177 168 45.1
A 9 19 528 7.99 177 168 45.1
A 0 30 513 7.66 177 168 45.1
B 2 9 467 9.26 162 155 33.7
B 3 17 437 8.37 162 155 33.7
B 14 254 436 8.34 162 155 33.7
C 12 241 453 6.81 165 155 43.7
C 7 111 416 5.97 165 155 43.7
C 3 187 406 5.74 165 155 43.7
D 6 231 390 6.19 146 133 41.5
D 10 189 383 6.02 146 133 41.5
D 15 47 373 5.78 146 133 41.5

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