ASTROSAT CZTI

Data Quality Report

Orbit 24921

Creation date: 2024-06-27T19:11:28.781322
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_205T01_9000003652_24921cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24921cztM0_level2_quad_clean.evt
Size (bytes)445,858,560132,333,120
Size425.2 MB 126.2 MB
Events in quadrant A3,143,652908,799
Events in quadrant B3,237,798924,959
Events in quadrant C3,264,144865,821
Events in quadrant D3,411,980851,946

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135912
B0138412
C0138692
D0146882

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554360.549283%
B6554630.961245%
C65541031.571559%
D6555961.464531%

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 8619 6556 0 0 0.00% 0.00%
B 8619 6556 1 1 0.01% 0.02%
C 8619 6556 9 9 0.10% 0.14%
D 8620 6557 68 68 0.79% 1.04%

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 13 254 10776 61.53 814 797 162.2
A 3 137 7472 41.16 814 797 162.2
A 0 226 6873 37.47 814 797 162.2
B 0 189 21704 138.06 811 793 151.5
B 12 111 18398 116.24 811 793 151.5
B 11 111 16492 103.65 811 793 151.5
C 14 238 126665 703.84 772 778 178.9
C 2 16 113993 632.99 772 778 178.9
C 7 247 8456 42.93 772 778 178.9
D 1 52 377926 2023.17 779 759 186.4
D 8 195 48775 257.56 779 759 186.4
D 2 234 27473 143.3 779 759 186.4

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