ASTROSAT CZTI

Data Quality Report

Orbit 36076

Creation date: 2022-08-10T06:00:41.704130
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/AS1T04_069T01_9000005158_36076cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36076cztM0_level2_quad_clean.evt
Size (bytes)483,894,72075,911,040
Size461.5 MB 72.4 MB
Events in quadrant A2,788,412496,759
Events in quadrant B2,920,171497,050
Events in quadrant C4,192,045445,546
Events in quadrant D4,363,389456,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118593
B0121172
C0159362
D0167782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5751100.173883%
B5751240.417319%
C575160110.450356%
D57513586.225004%

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 9516 5753 0 0 0.00% 0.00%
B 9516 5753 12 12 0.13% 0.21%
C 9516 5753 482 482 5.07% 8.38%
D 9516 5753 290 290 3.05% 5.04%

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 10 83 185396 1378.41 663 652 134.0
A 9 143 27333 199.07 663 652 134.0
A 13 254 9343 64.85 663 652 134.0
B 0 190 104176 813.15 658 640 127.3
B 5 255 77581 604.28 658 640 127.3
B 0 229 55455 430.51 658 640 127.3
C 15 208 1474411 10305.72 611 612 143.0
C 15 214 231721 1616.06 611 612 143.0
C 0 10 78554 545.02 611 612 143.0
D 12 227 840033 5453.01 627 611 153.9
D 1 52 358479 2324.76 627 611 153.9
D 12 17 249387 1616.08 627 611 153.9

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