ASTROSAT CZTI

Data Quality Report

Orbit 23987

Creation date: 2024-06-27T19:00:51.832129
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/AS1A07_165T01_9000003558_23987cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_23987cztM0_level2_quad_clean.evt
Size (bytes)602,988,480129,245,760
Size575.1 MB 123.3 MB
Events in quadrant A3,123,030910,587
Events in quadrant B3,196,979922,836
Events in quadrant C3,487,808865,355
Events in quadrant D8,010,104758,731

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134071
B0135351
C0145111
D0283091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6541721.100749%
B6541841.284207%
C65411632.491974%
D6542155223.723632%

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 7461 6542 0 0 0.00% 0.00%
B 7461 6542 1 1 0.01% 0.02%
C 7461 6542 46 46 0.62% 0.70%
D 7462 6543 1177 1177 15.77% 17.99%

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 11147 64.35 809 794 160.9
A 0 226 7067 38.99 809 794 160.9
A 3 137 6655 36.43 809 794 160.9
B 0 197 23941 156.67 804 787 147.8
B 12 111 16736 107.92 804 787 147.8
B 11 111 14721 94.28 804 787 147.8
C 0 10 335519 1924.02 758 763 174.0
C 14 238 121872 696.08 758 763 174.0
C 0 239 54060 306.33 758 763 174.0
D 12 218 3625277 21148.45 707 685 171.4
D 12 233 436546 2543.12 707 685 171.4
D 12 250 366767 2135.98 707 685 171.4

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