ASTROSAT CZTI

Data Quality Report

Orbit 23370

Creation date: 2024-06-27T18:53:26.759870
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_138T09_9000003458_23370cztM0_level2.evt modeM0/AS1A07_138T09_9000003458_23370cztM0_level2_quad_clean.evt
Size (bytes)871,750,080178,329,600
Size831.4 MB 170.1 MB
Events in quadrant A5,704,4371,150,207
Events in quadrant B5,918,1531,165,714
Events in quadrant C6,777,6401,122,951
Events in quadrant D7,154,0891,097,739

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0254092
B0258682
C0281152
D0298482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12507250.199888%
B12508690.551647%
C125081671.335146%
D125082962.366485%

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 13897 12509 0 0 0.00% 0.00%
B 13898 12510 6 6 0.04% 0.05%
C 13898 12510 20 20 0.14% 0.16%
D 13898 12510 252 252 1.81% 2.01%

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 17582 54.35 1479 1448 296.9
A 3 137 13257 39.78 1479 1448 296.9
A 0 226 12765 38.12 1479 1448 296.9
B 0 189 78966 275.31 1473 1436 281.6
B 12 111 35322 120.33 1473 1436 281.6
B 0 190 33033 112.2 1473 1436 281.6
C 0 239 631533 1905.73 1422 1431 330.6
C 14 238 223371 671.25 1422 1431 330.6
C 7 247 205522 617.27 1422 1431 330.6
D 1 52 1265127 3628.75 1433 1391 348.3
D 13 104 205202 585.23 1433 1391 348.3
D 7 238 184876 526.87 1433 1391 348.3

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