ASTROSAT CZTI

Data Quality Report

Orbit 20191230_C05_002T02_9000003402_level2

Creation date: 2025-12-08T00:18:40.572607
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/AS1C05_002T02_9000003402cztM0_level2.fits modeM0/AS1C05_002T02_9000003402cztM0_level2_quad_clean.evt
Size (bytes)94,544,64051,376,320
Size90.2 MB 49.0 MB
Events in quadrant A603,282242,807
Events in quadrant B586,232249,141
Events in quadrant C591,292235,146
Events in quadrant D462,694207,725

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190090
B0193090
C0194420
D0294500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8929240.268787%
B8931480.537454%
C89321171.309897%
D8930120613.505039%

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 11929 8937 0 0 0.00% 0.00%
B 11929 8941 0 0 0.00% 0.00%
C 11929 8938 0 0 0.00% 0.00%
D 11929 8792 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 29 586 10.7 157 149 40.8
A 0 30 482 8.15 157 149 40.8
A 7 110 447 7.3 157 149 40.8
B 14 254 417 8.17 155 149 32.8
B 3 80 413 8.05 155 149 32.8
B 2 9 410 7.95 155 149 32.8
C 1 80 468 7.73 156 148 41.4
C 1 81 428 6.76 156 148 41.4
C 7 111 409 6.3 156 148 41.4
D 6 67 338 5.86 132 121 37.0
D 7 3 334 5.75 132 121 37.0
D 15 46 324 5.48 132 121 37.0

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