ASTROSAT CZTI

Data Quality Report

Orbit 13440

Creation date: 2024-06-27T16:40:49.426101
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_103T01_9000001988_13440cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13440cztM0_level2_quad_clean.evt
Size (bytes)1,232,424,000252,264,960
Size1.1 GB 240.6 MB
Events in quadrant A8,862,7401,591,083
Events in quadrant B9,064,3031,621,888
Events in quadrant C8,978,7171,577,322
Events in quadrant D9,100,7021,509,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396955
B0397764
C0397364
D0410984

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03980
B03980
C03980
D03980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194631480.760417%
B194631971.012177%
C194631920.986487%
D194632101.078970%

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 21419 19464 4 4 0.02% 0.02%
B 21419 19464 2 2 0.01% 0.01%
C 21419 19465 6 6 0.03% 0.03%
D 21419 19465 56 56 0.26% 0.29%

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 15 69 33889 68.45 2288 2239 462.4
A 0 226 20243 38.94 2288 2239 462.4
A 1 162 19125 36.52 2288 2239 462.4
B 12 111 53392 116.64 2295 2233 438.6
B 11 111 44937 97.36 2295 2233 438.6
B 3 209 38106 81.79 2295 2233 438.6
C 3 233 191750 364.27 2243 2250 520.2
C 14 234 29825 53.01 2243 2250 520.2
C 13 61 16147 26.71 2243 2250 520.2
D 13 249 342929 640.53 2217 2152 532.0
D 12 110 158300 293.5 2217 2152 532.0
D 13 104 90908 166.83 2217 2152 532.0

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