ASTROSAT CZTI

Data Quality Report

Orbit 20210721_A10_094T33_9000004572_level2

Creation date: 2025-12-27T19:30:10.154826
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_094T33_9000004572cztM0_level2.fits modeM0/AS1A10_094T33_9000004572cztM0_level2_quad_clean.evt
Size (bytes)51,500,16065,249,280
Size49.1 MB 62.2 MB
Events in quadrant A321,138442,386
Events in quadrant B265,994325,921
Events in quadrant C309,434427,904
Events in quadrant D276,594393,421

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115170
B0250520
C0116800
D0136030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A55102524.573503%
B5510184733.520871%
C55103185.771325%
D55102434.410163%

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 5540 5509 0 0 0.00% 0.00%
B 5540 5504 0 0 0.00% 0.00%
C 5540 5509 0 0 0.00% 0.00%
D 5540 5510 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 10.48 83 78 22.3
A 9 19 259 8.1 83 78 22.3
A 7 110 250 7.7 83 78 22.3
B 2 9 227 10.04 70 67 15.9
B 5 128 196 8.09 70 67 15.9
B 4 227 173 6.65 70 67 15.9
C 9 233 226 6.64 82 77 22.5
C 3 126 217 6.23 82 77 22.5
C 3 235 214 6.1 82 77 22.5
D 4 246 224 6.72 78 71 22.8
D 14 254 208 6.02 78 71 22.8
D 15 47 203 5.8 78 71 22.8

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