ASTROSAT CZTI

Data Quality Report

Orbit 15372

Creation date: 2024-06-27T17:07:42.367912
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/AS1G08_037T01_9000002264_15372cztM0_level2.evt modeM0/AS1G08_037T01_9000002264_15372cztM0_level2_quad_clean.evt
Size (bytes)403,692,48083,010,240
Size385.0 MB 79.2 MB
Events in quadrant A2,623,797561,026
Events in quadrant B2,739,677558,736
Events in quadrant C2,671,187540,716
Events in quadrant D3,843,897495,303

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110201
B0113831
C0111181
D0149131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A51131082.112263%
B51131142.229611%
C5113681.329943%
D51134629.035791%

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 6394 5114 7 7 0.11% 0.14%
B 6394 5115 10 10 0.16% 0.20%
C 6394 5114 0 0 0.00% 0.00%
D 6394 5114 345 345 5.40% 6.75%

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 15 239 20720 149.52 673 662 134.2
A 13 248 14308 101.72 673 662 134.2
A 0 226 6005 39.83 673 662 134.2
B 4 48 80386 636.11 662 647 125.4
B 4 173 20151 155.59 662 647 125.4
B 12 111 13944 106.08 662 647 125.4
C 3 233 169701 1142.72 641 645 147.9
C 13 61 4656 27.11 641 645 147.9
C 7 247 1700 7.13 641 645 147.9
D 1 255 785864 5095.12 626 606 154.1
D 9 68 384783 2492.72 626 606 154.1
D 10 199 111744 721.11 626 606 154.1

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