ASTROSAT CZTI

Data Quality Report

Orbit 30252

Creation date: 2024-06-27T20:12:42.871982
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/AS1A10_007T01_9000004350_30252cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30252cztM0_level2_quad_clean.evt
Size (bytes)609,045,120109,117,440
Size580.8 MB 104.1 MB
Events in quadrant A3,242,589731,931
Events in quadrant B6,764,924707,222
Events in quadrant C3,378,740737,199
Events in quadrant D4,645,346701,088

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133322
B0241552
C0138042
D0179592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6117400.653915%
B611787814.353441%
C6117901.471309%
D61172153.514795%

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 7477 6118 4 4 0.05% 0.07%
B 7477 6118 627 627 8.39% 10.25%
C 7477 6118 0 0 0.00% 0.00%
D 7477 6118 148 148 1.98% 2.42%

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 8 192 23215 135.54 833 817 165.3
A 13 254 11151 62.54 833 817 165.3
A 3 137 7625 41.2 833 817 165.3
B 6 36 1885028 12604.8 806 788 149.5
B 6 159 1658377 11088.6 806 788 149.5
B 4 80 51095 336.53 806 788 149.5
C 14 238 137734 713.25 823 833 191.9
C 3 233 14962 73.61 823 833 191.9
C 2 114 14348 70.41 823 833 191.9
D 1 52 1140121 6008.44 806 793 189.6
D 8 195 292554 1538.65 806 793 189.6
D 13 104 59200 308.02 806 793 189.6

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