ASTROSAT CZTI

Data Quality Report

Orbit 20160414_G05_238T04_9000000416_level2

Creation date: 2025-10-28T23:00:43.748091
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/AS1G05_238T04_9000000416cztM0_level2.fits modeM0/AS1G05_238T04_9000000416cztM0_level2_quad_clean.evt
Size (bytes)938,603,5201,104,324,480
Size895.1 MB 1.0 GB
Events in quadrant A5,509,6866,777,177
Events in quadrant B5,363,8846,776,122
Events in quadrant C5,440,4706,523,550
Events in quadrant D4,518,5445,781,408

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02553310
B02435150
C02491110
D03125790

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022120
B022120
C022120
D022120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05790
B05790
C05790
D05790

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11096024962.249459%
B11092912581.134059%
C11094314761.330413%
D11083965025.866166%

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 168853 110931 0 0 0.00% 0.00%
B 168853 110916 0 0 0.00% 0.00%
C 168853 110922 0 0 0.00% 0.00%
D 168853 110724 0 0 0.00% 0.00%

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 29 5499 11.22 1437 1342 370.6
A 7 110 4913 9.64 1437 1342 370.6
A 9 19 4233 7.8 1437 1342 370.6
B 2 9 4800 12.32 1424 1360 279.3
B 12 226 4156 10.01 1424 1360 279.3
B 5 128 4122 9.89 1424 1360 279.3
C 1 81 4454 8.19 1441 1339 380.4
C 1 80 4352 7.92 1441 1339 380.4
C 1 65 3922 6.79 1441 1339 380.4
D 6 44 3513 6.78 1302 1180 344.2
D 6 231 3435 6.55 1302 1180 344.2
D 7 5 3399 6.45 1302 1180 344.2

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