ASTROSAT CZTI

Data Quality Report

Orbit 25290

Creation date: 2024-06-27T19:15:59.915776
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/AS1A09_022T01_9000003702_25290cztM0_level2.evt modeM0/AS1A09_022T01_9000003702_25290cztM0_level2_quad_clean.evt
Size (bytes)643,089,600100,385,280
Size613.3 MB 95.7 MB
Events in quadrant A8,242,337607,652
Events in quadrant B3,276,348678,856
Events in quadrant C3,172,811658,912
Events in quadrant D4,342,863639,189

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0288690
B0139480
C0134890
D0171940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6531176527.024958%
B6531610.934007%
C6531951.454601%
D65312383.644159%

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 7356 6532 1534 1534 20.85% 23.48%
B 7356 6532 2 2 0.03% 0.03%
C 7356 6532 0 0 0.00% 0.00%
D 7356 6532 187 187 2.54% 2.86%

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 6 16 5403543 37264.31 731 717 145.0
A 15 173 19084 126.68 731 717 145.0
A 13 254 9582 61.14 731 717 145.0
B 15 33 67014 449.81 793 775 147.3
B 0 229 51512 344.54 793 775 147.3
B 3 112 51394 343.74 793 775 147.3
C 14 238 124342 685.11 775 778 180.4
C 9 54 11820 61.22 775 778 180.4
C 0 207 8571 43.21 775 778 180.4
D 1 52 588402 3140.88 778 757 187.1
D 12 233 367337 1959.32 778 757 187.1
D 8 195 278430 1484.12 778 757 187.1

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