ASTROSAT CZTI

Data Quality Report

Orbit 37294

Creation date: 2024-06-27T21:38:02.043281
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/AS1A10_103T07_9000005302_37294cztM0_level2.evt modeM0/AS1A10_103T07_9000005302_37294cztM0_level2_quad_clean.evt
Size (bytes)539,982,72082,241,280
Size515.0 MB 78.4 MB
Events in quadrant A2,992,277522,638
Events in quadrant B2,811,223534,091
Events in quadrant C3,327,028530,667
Events in quadrant D6,824,832493,173

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126513
B0121682
C0136072
D0244012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5870150.255537%
B5870170.289608%
C58701171.993186%
D5870164928.091993%

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 7214 5871 4 4 0.06% 0.07%
B 7214 5871 4 4 0.06% 0.07%
C 7214 5870 95 95 1.32% 1.62%
D 7214 5870 1567 1567 21.72% 26.70%

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 10 83 284192 2121.38 658 645 133.7
A 7 16 63045 466.85 658 645 133.7
A 6 10 46198 340.81 658 645 133.7
B 0 213 97681 759.75 654 636 127.7
B 0 221 44087 340.17 654 636 127.7
B 15 85 29268 224.16 654 636 127.7
C 0 10 257969 1724.55 635 639 149.2
C 1 23 256423 1714.19 635 639 149.2
C 15 214 248048 1658.07 635 639 149.2
D 10 253 4586237 36405.44 510 495 126.0
D 12 227 122530 968.82 510 495 126.0
D 2 249 55646 437.83 510 495 126.0

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