ASTROSAT CZTI

Data Quality Report

Orbit 32079

Creation date: 2024-06-27T20:36:14.742502
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/AS1C06_002T04_9000004684_32079cztM0_level2.evt modeM0/AS1C06_002T04_9000004684_32079cztM0_level2_quad_clean.evt
Size (bytes)1,362,450,240198,866,880
Size1.3 GB 189.7 MB
Events in quadrant A5,221,5841,494,288
Events in quadrant B18,528,6801,154,171
Events in quadrant C8,430,4291,287,167
Events in quadrant D8,378,6761,361,068

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022134458
B0644062295
C0330491102
D032847584

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02204
B02206
C02204
D02204

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A105021421.352123%
B10343539252.131877%
C10441126312.096542%
D104942852.715838%

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 12986 10612 0 0 0.00% 0.00%
B 12985 10428 4226 4226 32.55% 40.53%
C 12985 10544 887 887 6.83% 8.41%
D 12986 10603 211 211 1.62% 1.99%

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 20501 72.11 1348 1322 266.0
A 3 137 12613 42.45 1348 1322 266.0
A 0 226 11766 39.27 1348 1322 266.0
B 10 245 11401807 55617.97 1095 1068 205.0
B 6 159 2313286 11280.05 1095 1068 205.0
B 0 190 250623 1217.44 1095 1068 205.0
C 3 233 2876173 10558.93 1194 1203 272.3
C 0 10 513266 1880.66 1194 1203 272.3
C 14 238 196797 718.36 1194 1203 272.3
D 8 195 1848676 6153.83 1283 1251 300.2
D 12 227 1239754 4125.49 1283 1251 300.2
D 12 233 329326 1092.83 1283 1251 300.2

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