ASTROSAT CZTI

Data Quality Report

Orbit 18993

Creation date: 2024-06-27T17:57:43.699240
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/AS1A05_132T01_9000002828_18993cztM0_level2.evt modeM0/AS1A05_132T01_9000002828_18993cztM0_level2_quad_clean.evt
Size (bytes)1,070,156,160146,399,040
Size1020.6 MB 139.6 MB
Events in quadrant A6,052,993937,482
Events in quadrant B6,529,735949,480
Events in quadrant C5,686,206922,396
Events in quadrant D13,386,674850,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248742
B0263632
C0233932
D0474352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111693292.945653%
B111702642.363474%
C111701781.593554%
D11170236221.145927%

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 13164 11171 153 153 1.16% 1.37%
B 13165 11172 83 83 0.63% 0.74%
C 13165 11172 0 0 0.00% 0.00%
D 13165 11172 1979 1979 15.03% 17.71%

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 9 143 635363 2238.9 1404 1378 283.2
A 13 254 12803 40.35 1404 1378 283.2
A 0 226 12180 38.15 1404 1378 283.2
B 3 112 669088 2513.63 1399 1366 265.6
B 7 220 236952 886.86 1399 1366 265.6
B 10 245 45631 166.64 1399 1366 265.6
C 14 238 212375 660.69 1368 1376 319.4
C 3 233 135772 420.82 1368 1376 319.4
C 13 61 9613 25.79 1368 1376 319.4
D 1 52 4717482 14741.71 1312 1275 319.9
D 7 238 3645764 11391.78 1312 1275 319.9
D 2 234 45581 138.49 1312 1275 319.9

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