ASTROSAT CZTI

Data Quality Report

Orbit 23621

Creation date: 2024-06-27T18:56:53.602305
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/AS1T03_178T01_9000003488_23621cztM0_level2.evt modeM0/AS1T03_178T01_9000003488_23621cztM0_level2_quad_clean.evt
Size (bytes)797,898,24089,199,360
Size760.9 MB 85.1 MB
Events in quadrant A3,162,546635,414
Events in quadrant B3,909,586648,607
Events in quadrant C3,450,063632,117
Events in quadrant D13,212,042339,774

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133112
B0154752
C0140092
D0434628

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6359310.487498%
B63592423.805630%
C6359901.415317%
D6358437468.795219%

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 7609 6360 0 0 0.00% 0.00%
B 7609 6359 129 129 1.70% 2.03%
C 7609 6359 7 7 0.09% 0.11%
D 7607 6357 4331 4331 56.93% 68.13%

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 9567 53.66 820 805 163.3
A 3 137 7164 38.95 820 805 163.3
A 0 226 6940 37.57 820 805 163.3
B 3 64 590688 3840.76 820 802 153.6
B 0 189 53207 341.21 820 802 153.6
B 0 229 41041 262.0 820 802 153.6
C 14 238 128591 684.52 805 815 186.7
C 10 9 116467 619.57 805 815 186.7
C 7 247 46316 243.75 805 815 186.7
D 1 52 11257667 93370.09 506 493 120.6
D 13 172 30430 248.31 506 493 120.6
D 2 234 14772 118.43 506 493 120.6

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