ASTROSAT CZTI

Data Quality Report

Orbit 31064

Creation date: 2024-06-27T20:22:56.118766
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/AS1C06_002T01_9000004490_31064cztM0_level2.evt modeM0/AS1C06_002T01_9000004490_31064cztM0_level2_quad_clean.evt
Size (bytes)558,224,640115,044,480
Size532.4 MB 109.7 MB
Events in quadrant A3,081,215776,749
Events in quadrant B5,457,886774,807
Events in quadrant C3,466,058773,325
Events in quadrant D4,490,044735,368

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130191
B0206211
C0142461
D0173371

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6068390.642716%
B60692033.344867%
C60691782.932938%
D60691632.685780%

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 7418 6069 0 0 0.00% 0.00%
B 7419 6070 37 37 0.50% 0.61%
C 7419 6070 37 37 0.50% 0.61%
D 7419 6070 96 96 1.29% 1.58%

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 13071 79.09 795 781 155.4
A 12 96 10379 61.76 795 781 155.4
A 3 137 6984 39.92 795 781 155.4
B 6 159 1972316 13789.7 791 775 143.0
B 0 183 99587 691.13 791 775 143.0
B 4 67 77537 536.9 791 775 143.0
C 0 10 133668 740.02 784 791 179.6
C 14 238 126888 702.26 784 791 179.6
C 3 233 80290 442.75 784 791 179.6
D 8 195 911158 4926.24 780 762 184.8
D 13 174 254624 1373.67 780 762 184.8
D 13 249 135657 729.93 780 762 184.8

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