ASTROSAT CZTI

Data Quality Report

Orbit 20791

Creation date: 2024-06-27T18:19:38.295578
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_013T01_9000003070_20791cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20791cztM0_level2_quad_clean.evt
Size (bytes)904,599,360173,566,080
Size862.7 MB 165.5 MB
Events in quadrant A5,582,2281,146,511
Events in quadrant B6,139,1541,123,195
Events in quadrant C5,580,4291,101,344
Events in quadrant D9,273,8721,048,330

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031862
B032367
C032366
D032276

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323007474
B0356589313
C0322707360
D04942514045

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131
B0175
C0131
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12127930.766884%
B120961531.264881%
C121651160.953555%
D1191610949.180933%

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 25455 12629 0 0 0.00% 0.00%
B 25455 12606 36 36 0.14% 0.29%
C 25454 12659 0 0 0.00% 0.00%
D 25454 12385 847 847 3.33% 6.84%

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 0 226 12645 38.24 1451 1422 293.5
A 3 137 11693 34.99 1451 1422 293.5
A 12 194 10574 31.18 1451 1422 293.5
B 7 220 194514 719.63 1426 1392 268.4
B 0 182 71657 261.83 1426 1392 268.4
B 3 64 54511 197.94 1426 1392 268.4
C 14 238 213915 664.05 1371 1379 320.1
C 7 247 11466 31.51 1371 1379 320.1
C 13 61 9713 26.04 1371 1379 320.1
D 1 20 1695547 5314.71 1320 1283 318.8
D 1 52 1335464 4185.17 1320 1283 318.8
D 12 227 845190 2647.24 1320 1283 318.8

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