ASTROSAT CZTI

Data Quality Report

Orbit 22651

Creation date: 2024-06-27T18:44:02.671562
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/AS1A08_007T01_9000003362_22651cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22651cztM0_level2_quad_clean.evt
Size (bytes)830,448,000161,161,920
Size792.0 MB 153.7 MB
Events in quadrant A5,552,3541,057,227
Events in quadrant B5,780,5371,066,953
Events in quadrant C5,612,5251,013,140
Events in quadrant D7,469,250990,952

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233972
B0238452
C0235303
D0296712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10875920.845977%
B10875950.873563%
C108741561.434615%
D108742222.041567%

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 13305 10877 0 0 0.00% 0.00%
B 13305 10877 4 4 0.03% 0.04%
C 13304 10876 5 5 0.04% 0.05%
D 13304 10876 126 126 0.95% 1.16%

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 19972 65.28 1437 1407 284.4
A 3 1 14356 45.53 1437 1407 284.4
A 0 226 12760 39.92 1437 1407 284.4
B 0 219 113397 429.99 1415 1386 260.5
B 0 190 47501 177.03 1415 1386 260.5
B 12 111 29482 107.85 1415 1386 260.5
C 14 238 220292 700.9 1364 1375 312.3
C 10 22 41568 128.68 1364 1375 312.3
C 0 10 12909 36.93 1364 1375 312.3
D 1 52 1852916 5479.07 1397 1355 337.9
D 12 233 124521 364.47 1397 1355 337.9
D 13 172 66891 193.93 1397 1355 337.9

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