ASTROSAT CZTI

Data Quality Report

Orbit 14642

Creation date: 2024-06-27T16:57:53.933968
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/AS1A04_075T04_9000002160_14642cztM0_level2.evt modeM0/AS1A04_075T04_9000002160_14642cztM0_level2_quad_clean.evt
Size (bytes)178,718,40026,032,320
Size170.4 MB 24.8 MB
Events in quadrant A1,237,794157,605
Events in quadrant B1,346,533156,904
Events in quadrant C1,534,468154,622
Events in quadrant D1,136,582154,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049801
B053290
C062380
D048100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2285652.844639%
B22851074.682713%
C2285622.713348%
D2285582.538293%

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 3131 2286 0 0 0.00% 0.00%
B 3131 2286 23 23 0.73% 1.01%
C 3131 2286 1 1 0.03% 0.04%
D 3131 2286 0 0 0.00% 0.00%

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 1 162 27620 433.58 299 292 63.0
A 8 15 24416 382.74 299 292 63.0
A 1 178 11380 175.92 299 292 63.0
B 10 16 89175 1493.62 295 288 59.5
B 0 230 62342 1042.73 295 288 59.5
B 0 205 11352 185.91 295 288 59.5
C 3 233 419187 6188.96 284 285 67.7
C 10 22 3259 43.94 284 285 67.7
C 13 61 2021 25.65 284 285 67.7
D 9 1 10560 141.87 288 279 72.5
D 10 70 9306 124.56 288 279 72.5
D 10 199 8980 120.06 288 279 72.5

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