ASTROSAT CZTI

Data Quality Report

Orbit 23888

Creation date: 2024-06-27T18:59:49.020034
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/AS1A07_142T01_9000003540_23888cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23888cztM0_level2_quad_clean.evt
Size (bytes)542,350,080105,102,720
Size517.2 MB 100.2 MB
Events in quadrant A3,633,656677,787
Events in quadrant B3,806,057688,076
Events in quadrant C4,489,608644,003
Events in quadrant D3,979,692644,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157002
B0161062
C0181532
D0169642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7603500.657635%
B76031001.315270%
C76033624.761278%
D7603781.025911%

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 7788 7605 0 0 0.00% 0.00%
B 7788 7605 4 4 0.05% 0.05%
C 7788 7605 141 141 1.81% 1.85%
D 7788 7605 19 19 0.24% 0.25%

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 13982 68.66 940 920 190.2
A 3 137 8252 38.54 940 920 190.2
A 0 226 8098 37.73 940 920 190.2
B 15 33 27777 148.67 943 920 180.6
B 0 189 24459 130.3 943 920 180.6
B 12 111 21592 114.43 943 920 180.6
C 0 10 859407 4073.72 894 900 210.7
C 14 238 140168 660.84 894 900 210.7
C 13 61 6294 25.6 894 900 210.7
D 1 52 231827 1023.1 915 888 225.7
D 8 195 201054 886.77 915 888 225.7
D 2 234 38513 166.68 915 888 225.7

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