ASTROSAT CZTI

Data Quality Report

Orbit 19078

Creation date: 2024-06-27T17:58:48.930223
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/AS1A05_046T01_9000002834_19078cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19078cztM0_level2_quad_clean.evt
Size (bytes)464,852,160103,913,280
Size443.3 MB 99.1 MB
Events in quadrant A3,273,193674,305
Events in quadrant B3,404,471699,353
Events in quadrant C3,417,177672,014
Events in quadrant D3,538,240644,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137442
B0141682
C0141022
D0147532

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6554560.854440%
B6554721.098566%
C6554981.495270%
D6554941.434239%

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 7889 6556 3 3 0.04% 0.05%
B 7889 6556 1 1 0.01% 0.02%
C 7889 6556 8 8 0.10% 0.12%
D 7889 6556 49 49 0.62% 0.75%

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 9 143 30411 175.58 842 827 168.5
A 13 254 8535 45.75 842 827 168.5
A 0 226 7278 38.29 842 827 168.5
B 7 220 49908 308.76 849 832 158.9
B 0 189 22864 138.61 849 832 158.9
B 12 111 18734 112.63 849 832 158.9
C 14 238 128502 660.36 824 832 193.3
C 0 207 30901 155.53 824 832 193.3
C 3 233 24580 122.83 824 832 193.3
D 11 176 234990 1169.8 823 800 200.2
D 1 52 145516 722.87 823 800 200.2
D 7 238 50361 247.56 823 800 200.2

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