ASTROSAT CZTI

Data Quality Report

Orbit 20200715_A07_068T01_9000003760_level2

Creation date: 2025-12-13T18:04:57.530450
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/AS1A07_068T01_9000003760cztM0_level2.fits modeM0/AS1A07_068T01_9000003760cztM0_level2_quad_clean.evt
Size (bytes)4,083,756,4803,445,346,880
Size3.8 GB 3.2 GB
Events in quadrant A25,170,41020,156,259
Events in quadrant B24,553,70420,239,095
Events in quadrant C24,761,77019,153,450
Events in quadrant D21,337,54416,951,771

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09778500
B08691540
C08696000
D011991680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084640
B084700
C084700
D084640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06890
B06870
C06880
D06880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A405902204975.049741%
B40588557361.413208%
C40589770081.726546%
D405799297887.340580%

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 508422 405625 0 0 0.00% 0.00%
B 508422 406184 0 0 0.00% 0.00%
C 508422 406185 0 0 0.00% 0.00%
D 508422 405506 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 21174 9.48 6569 6190 1580.2
A 7 110 20090 8.8 6569 6190 1580.2
A 0 30 18540 7.81 6569 6190 1580.2
B 2 9 19650 10.79 6490 6209 1246.0
B 2 8 16191 8.01 6490 6209 1246.0
B 5 128 15896 7.77 6490 6209 1246.0
C 12 241 17163 6.74 6550 6144 1635.0
C 9 209 16560 6.37 6550 6144 1635.0
C 3 126 16515 6.34 6550 6144 1635.0
D 6 231 14941 5.88 6100 5585 1589.9
D 6 67 14920 5.87 6100 5585 1589.9
D 10 189 14870 5.84 6100 5585 1589.9

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