ASTROSAT CZTI

Data Quality Report

Orbit 23212

Creation date: 2024-06-27T18:51:20.491099
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_008T02_9000003430_23212cztM0_level2.evt modeM0/AS1A08_008T02_9000003430_23212cztM0_level2_quad_clean.evt
Size (bytes)907,833,600180,590,400
Size865.8 MB 172.2 MB
Events in quadrant A5,012,4641,237,498
Events in quadrant B5,238,4171,251,724
Events in quadrant C5,273,9301,202,511
Events in quadrant D11,225,4711,016,797

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222622
B0226922
C0224632
D0407382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02240
B02240
C02240
D02240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10982980.892369%
B109831261.147228%
C109831731.575162%
D10983230020.941455%

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 12062 10985 0 0 0.00% 0.00%
B 12063 10986 6 6 0.05% 0.05%
C 12063 10985 1 1 0.01% 0.01%
D 12063 10986 2025 2025 16.79% 18.43%

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 16340 57.81 1299 1268 260.7
A 3 137 11741 40.17 1299 1268 260.7
A 0 226 11148 37.9 1299 1268 260.7
B 0 190 55320 220.56 1291 1257 245.1
B 0 228 53756 214.18 1291 1257 245.1
B 15 32 49283 195.93 1291 1257 245.1
C 14 238 197721 679.45 1245 1251 289.2
C 0 10 140890 482.91 1245 1251 289.2
C 7 247 77644 264.19 1245 1251 289.2
D 1 52 5171026 18967.07 1122 1088 272.6
D 13 153 1226016 4493.92 1122 1088 272.6
D 12 233 466656 1708.04 1122 1088 272.6

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