ASTROSAT CZTI

Data Quality Report

Orbit 20210802_A10_094T75_9000004614_level2

Creation date: 2025-12-28T03:33:19.816820
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/AS1A10_094T75_9000004614cztM0_level2.fits modeM0/AS1A10_094T75_9000004614cztM0_level2_quad_clean.evt
Size (bytes)65,943,36083,551,680
Size62.9 MB 79.7 MB
Events in quadrant A379,414481,459
Events in quadrant B388,504555,670
Events in quadrant C399,488547,715
Events in quadrant D329,852445,660

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0204840
B0220620
C0151810
D0219340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7169101314.130283%
B71681421.981027%
C7168991.381138%
D716882511.509487%

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 11453 7051 0 0 0.00% 0.00%
B 11453 7166 0 0 0.00% 0.00%
C 11454 7167 0 0 0.00% 0.00%
D 11453 7126 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 29 312 8.35 99 93 26.2
A 9 19 298 7.81 99 93 26.2
A 0 30 291 7.55 99 93 26.2
B 2 9 300 8.96 103 99 22.4
B 3 80 271 7.67 103 99 22.4
B 2 245 256 7.0 103 99 22.4
C 12 241 308 7.25 105 99 28.8
C 3 126 289 6.59 105 99 28.8
C 3 187 278 6.21 105 99 28.8
D 3 14 260 6.49 94 85 27.0
D 15 47 258 6.42 94 85 27.0
D 4 160 257 6.38 94 85 27.0

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