ASTROSAT CZTI

Data Quality Report

Orbit 10492

Creation date: 2024-06-27T16:00:06.594143
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/AS1G07_057T01_9000001520_10492cztM0_level2.evt modeM0/AS1G07_057T01_9000001520_10492cztM0_level2_quad_clean.evt
Size (bytes)903,913,920168,664,320
Size862.0 MB 160.9 MB
Events in quadrant A6,200,9861,058,110
Events in quadrant B6,619,6851,076,536
Events in quadrant C5,679,2591,075,276
Events in quadrant D8,044,0061,049,966

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454193
B0454191
C0454199
D0443176

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05015
B05924
C05823
D05116

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04658920426
B05503527260
C04669721509
D05806825635

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12252610.497878%
B118733152.653078%
C12262490.399609%
D126401931.526899%

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 16982 13209 3 3 0.02% 0.02%
B 16982 12897 130 130 0.77% 1.01%
C 16981 13218 0 0 0.00% 0.00%
D 16982 13233 103 103 0.61% 0.78%

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 15 239 301287 1008.32 1475 1444 297.4
A 3 80 170499 568.5 1475 1444 297.4
A 0 226 13421 40.28 1475 1444 297.4
B 4 239 855379 3175.44 1429 1395 268.9
B 0 214 87745 321.08 1429 1395 268.9
B 10 246 45042 162.3 1429 1395 268.9
C 14 234 29026 82.37 1448 1457 334.7
C 13 61 10729 27.7 1448 1457 334.7
C 8 222 3712 6.74 1448 1457 334.7
D 8 195 1284391 3672.09 1462 1423 349.4
D 1 52 427506 1219.53 1462 1423 349.4
D 1 20 358598 1022.3 1462 1423 349.4

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