ASTROSAT CZTI

Data Quality Report

Orbit 19992

Creation date: 2024-06-27T18:09:48.295821
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/AS1A06_002T02_9000002982_19992cztM0_level2.evt modeM0/AS1A06_002T02_9000002982_19992cztM0_level2_quad_clean.evt
Size (bytes)522,112,320100,301,760
Size497.9 MB 95.7 MB
Events in quadrant A3,706,160647,966
Events in quadrant B3,911,323649,756
Events in quadrant C3,610,521625,487
Events in quadrant D4,101,840619,615

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156271
B0163601
C0151711
D0169371

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71041221.717342%
B71051622.280084%
C71051832.575651%
D71051602.251935%

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 9019 7105 27 27 0.30% 0.38%
B 9020 7105 21 21 0.23% 0.30%
C 9019 7104 0 0 0.00% 0.00%
D 9020 7105 54 54 0.60% 0.76%

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 14 238 190286 1046.41 900 880 181.0
A 13 252 50231 272.65 900 880 181.0
A 0 226 7703 37.69 900 880 181.0
B 0 197 151406 885.11 895 872 170.1
B 7 220 112515 656.44 895 872 170.1
B 0 190 71415 414.78 895 872 170.1
C 14 238 136423 669.98 868 874 202.3
C 3 233 45409 220.12 868 874 202.3
C 0 207 39871 192.75 868 874 202.3
D 12 227 283287 1327.71 881 858 212.7
D 1 52 261731 1226.37 881 858 212.7
D 12 218 137722 643.4 881 858 212.7

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