ASTROSAT CZTI

Data Quality Report

Orbit 22751

Creation date: 2024-06-27T18:45:10.021194
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/AS1A08_007T01_9000003362_22751cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22751cztM0_level2_quad_clean.evt
Size (bytes)680,690,880125,784,000
Size649.2 MB 120.0 MB
Events in quadrant A4,473,430798,832
Events in quadrant B4,769,783814,976
Events in quadrant C4,596,544791,704
Events in quadrant D6,142,878756,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01880
B01880
C01880
D01880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191172
B0200142
C0194052
D0243993

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9341150.160582%
B9342580.620852%
C9342770.824235%
D93412943.147415%

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 11486 9343 0 0 0.00% 0.00%
B 11487 9344 11 11 0.10% 0.12%
C 11487 9344 3 3 0.03% 0.03%
D 11486 9343 210 210 1.83% 2.25%

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 14735 58.56 1160 1138 232.2
A 0 226 10182 38.95 1160 1138 232.2
A 3 137 9249 34.93 1160 1138 232.2
B 10 247 130657 599.93 1156 1128 215.9
B 0 190 53293 241.61 1156 1128 215.9
B 0 230 25560 113.16 1156 1128 215.9
C 14 238 177089 670.38 1129 1137 262.5
C 10 22 14727 51.78 1129 1137 262.5
C 13 61 7822 25.47 1129 1137 262.5
D 1 52 1572746 5764.18 1131 1098 272.7
D 2 152 201620 735.43 1131 1098 272.7
D 2 234 39086 139.32 1131 1098 272.7

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