ASTROSAT CZTI

Data Quality Report

Orbit 21695

Creation date: 2024-06-27T18:31:11.295436
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_039T02_9000003212_21695cztM0_level2.evt modeM0/AS1A07_039T02_9000003212_21695cztM0_level2_quad_clean.evt
Size (bytes)255,124,80062,064,000
Size243.3 MB 59.2 MB
Events in quadrant A1,467,621419,792
Events in quadrant B1,633,126435,548
Events in quadrant C2,512,981413,178
Events in quadrant D1,912,554402,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061283
B066501
C094141
D075971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A293640.136240%
B2937381.293837%
C29371033.506980%
D2937381.293837%

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 4152 2938 0 0 0.00% 0.00%
B 4152 2938 13 13 0.31% 0.44%
C 4152 2938 9 9 0.22% 0.31%
D 4152 2938 31 31 0.75% 1.06%

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 13 254 5435 65.26 380 373 77.6
A 0 226 3297 37.7 380 373 77.6
A 3 137 3144 35.73 380 373 77.6
B 0 229 59615 816.2 383 373 72.6
B 3 64 42810 584.67 383 373 72.6
B 0 230 11963 159.68 383 373 72.6
C 8 208 997589 11518.09 368 370 86.6
C 14 238 59466 682.57 368 370 86.6
C 3 233 10925 121.91 368 370 86.6
D 1 20 222932 2487.35 369 358 89.5
D 12 235 67627 751.76 369 358 89.5
D 2 136 56587 628.38 369 358 89.5

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