ASTROSAT CZTI

Data Quality Report

Orbit 20200304_A07_001T03_9000003548_level2

Creation date: 2025-12-09T19:41:16.016801
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_001T03_9000003548cztM0_level2.fits modeM0/AS1A07_001T03_9000003548cztM0_level2_quad_clean.evt
Size (bytes)98,435,52097,148,160
Size93.9 MB 92.6 MB
Events in quadrant A664,494665,469
Events in quadrant B622,908656,970
Events in quadrant C616,492612,553
Events in quadrant D411,540342,305

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205860
B0207500
C0249320
D0522670

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A95891331.387006%
B95721401.462599%
C95724214.398245%
D9566432145.170395%

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 12186 9608 0 0 0.00% 0.00%
B 12186 9588 0 0 0.00% 0.00%
C 12186 9596 0 0 0.00% 0.00%
D 12185 9348 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 29 592 9.7 173 165 44.0
A 7 110 541 8.55 173 165 44.0
A 9 19 512 7.89 173 165 44.0
B 2 9 511 10.23 165 159 34.4
B 2 8 428 7.82 165 159 34.4
B 5 128 414 7.41 165 159 34.4
C 1 80 489 7.86 162 154 42.6
C 1 81 486 7.79 162 154 42.6
C 9 233 414 6.1 162 154 42.6
D 6 67 318 6.5 117 107 32.5
D 10 189 303 6.03 117 107 32.5
D 6 51 301 5.97 117 107 32.5

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