ASTROSAT CZTI

Data Quality Report

Orbit 23768

Creation date: 2024-06-27T18:58:32.110783
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/AS1T03_180T01_9000003524_23768cztM0_level2.evt modeM0/AS1T03_180T01_9000003524_23768cztM0_level2_quad_clean.evt
Size (bytes)129,677,76013,541,760
Size123.7 MB 12.9 MB
Events in quadrant A699,83479,307
Events in quadrant B729,06981,830
Events in quadrant C754,19377,466
Events in quadrant D1,654,60374,646

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027841
B029141
C029441
D058435

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127930.234558%
B1279110.860047%
C1279473.674746%
D127839230.672926%

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 1279 1279 0 0 0.00% 0.00%
B 1279 1279 0 0 0.00% 0.00%
C 1279 1279 5 5 0.39% 0.39%
D 1278 1278 317 317 24.80% 24.80%

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 8 255 2473 60.33 181 177 38.1
A 13 254 1960 46.85 181 177 38.1
A 0 226 1550 36.08 181 177 38.1
B 0 229 6767 183.72 182 179 35.9
B 12 111 4002 106.61 182 179 35.9
B 0 230 3883 103.29 182 179 35.9
C 0 10 49197 1178.59 172 173 41.6
C 14 238 27910 666.83 172 173 41.6
C 1 16 3470 79.26 172 173 41.6
D 13 174 835438 21022.61 156 152 39.7
D 8 195 83830 2106.02 156 152 39.7
D 1 52 69719 1750.87 156 152 39.7

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