ASTROSAT CZTI

Data Quality Report

Orbit 40472

Creation date: 2024-06-27T22:16:30.887425
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/AS1A12_022T01_9000005540_40472cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40472cztM0_level2_quad_clean.evt
Size (bytes)289,117,44088,629,120
Size275.7 MB 84.5 MB
Events in quadrant A2,775,856597,895
Events in quadrant B2,365,789613,573
Events in quadrant C2,631,871584,522
Events in quadrant D2,503,302506,214

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116173
B0109892
C0113372
D0114232

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5446120.220345%
B5446110.201983%
C5446170.312156%
D54463676.738891%

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 7239 5447 3 3 0.04% 0.06%
B 7239 5447 2 2 0.03% 0.04%
C 7239 5447 16 16 0.22% 0.29%
D 7239 5447 20 20 0.28% 0.37%

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 477842 3995.07 587 575 119.5
A 3 1 12020 95.8 587 575 119.5
A 13 6 8423 65.69 587 575 119.5
B 3 112 26197 225.47 583 566 113.7
B 0 229 25955 223.34 583 566 113.7
B 12 111 14528 122.82 583 566 113.7
C 15 214 238092 1795.93 568 571 132.3
C 14 254 97255 731.04 568 571 132.3
C 10 20 68436 513.14 568 571 132.3
D 12 191 148538 1093.43 549 532 135.4
D 12 128 105527 775.68 549 532 135.4
D 2 250 75207 551.68 549 532 135.4

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