ASTROSAT CZTI

Data Quality Report

Orbit 18715

Creation date: 2024-06-27T17:53:50.907336
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/AS1A05_165T07_9000002796_18715cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18715cztM0_level2_quad_clean.evt
Size (bytes)517,138,56072,443,520
Size493.2 MB 69.1 MB
Events in quadrant A3,608,134443,092
Events in quadrant B3,646,067446,143
Events in quadrant C4,423,421425,308
Events in quadrant D3,537,902420,241

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148422
B0149542
C0176612
D0146852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65751322.007605%
B65751402.129278%
C65751912.904943%
D65751131.718631%

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 7860 6575 0 0 0.00% 0.00%
B 7860 6575 7 7 0.09% 0.11%
C 7860 6575 0 0 0.00% 0.00%
D 7860 6575 14 14 0.18% 0.21%

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 14 111 23253 123.43 925 909 181.0
A 0 13 10523 53.11 925 909 181.0
A 13 254 10015 50.3 925 909 181.0
B 3 64 23934 136.71 915 896 168.5
B 0 230 23396 133.52 915 896 168.5
B 12 111 19618 111.1 915 896 168.5
C 3 233 876262 4394.39 873 882 199.2
C 14 238 140268 699.71 873 882 199.2
C 13 61 6170 26.55 873 882 199.2
D 14 34 78863 370.58 890 866 210.5
D 2 234 29453 135.82 890 866 210.5
D 7 238 29343 135.3 890 866 210.5

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