ASTROSAT CZTI

Data Quality Report

Orbit 37623

Creation date: 2024-06-27T21:42:20.006663
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/AS1A11_075T01_9000005342_37623cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37623cztM0_level2_quad_clean.evt
Size (bytes)451,261,44095,270,400
Size430.4 MB 90.9 MB
Events in quadrant A3,270,498617,676
Events in quadrant B3,334,191640,719
Events in quadrant C2,961,285650,279
Events in quadrant D3,729,036593,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132653
B0133592
C0119392
D0149032

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5470240.438757%
B54701392.541133%
C5470340.621572%
D54702805.118830%

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 9687 5472 19 19 0.20% 0.35%
B 9687 5470 101 101 1.04% 1.85%
C 9687 5470 28 28 0.29% 0.51%
D 9687 5470 281 281 2.90% 5.14%

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 15 222 371696 2861.91 646 636 129.7
A 10 83 315249 2426.55 646 636 129.7
A 9 143 43708 332.21 646 636 129.7
B 5 172 295938 2431.48 650 635 121.4
B 5 255 201550 1654.3 650 635 121.4
B 4 232 97108 794.34 650 635 121.4
C 15 214 251091 1677.03 649 656 149.3
C 0 10 123817 824.75 649 656 149.3
C 14 254 26762 174.82 649 656 149.3
D 2 249 489751 3293.35 625 611 148.5
D 13 171 198510 1332.44 625 611 148.5
D 2 250 176661 1185.33 625 611 148.5

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