ASTROSAT CZTI

Data Quality Report

Orbit 20210220_A10_053T19_9000004190_level2

Creation date: 2025-12-20T16:24:05.628421
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_053T19_9000004190cztM0_level2.fits modeM0/AS1A10_053T19_9000004190cztM0_level2_quad_clean.evt
Size (bytes)68,207,04028,370,880
Size65.0 MB 27.1 MB
Events in quadrant A431,096105,459
Events in quadrant B409,472105,112
Events in quadrant C413,150100,960
Events in quadrant D356,11490,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137530
B0159760
C0194680
D0215380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6532420.642988%
B65321482.265769%
C65322123.245560%
D65323996.108389%

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 7616 6531 0 0 0.00% 0.00%
B 7616 6531 0 0 0.00% 0.00%
C 7616 6531 0 0 0.00% 0.00%
D 7616 6531 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 29 393 9.97 112 106 28.8
A 7 110 326 7.64 112 106 28.8
A 9 19 310 7.08 112 106 28.8
B 2 9 318 9.12 108 104 23.5
B 5 128 292 8.01 108 104 23.5
B 2 8 286 7.76 108 104 23.5
C 1 80 317 7.23 109 103 29.6
C 1 81 310 7.0 109 103 29.6
C 3 187 305 6.83 109 103 29.6
D 15 46 273 6.3 101 92 28.7
D 6 231 271 6.23 101 92 28.7
D 3 14 259 5.81 101 92 28.7

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