ASTROSAT CZTI

Data Quality Report

Orbit 20171128_G08_006T01_9000001728_level2

Creation date: 2025-11-18T18:33:42.272772
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/AS1G08_006T01_9000001728cztM0_level2.fits modeM0/AS1G08_006T01_9000001728cztM0_level2_quad_clean.evt
Size (bytes)342,659,520359,907,840
Size326.8 MB 343.2 MB
Events in quadrant A2,050,1962,102,119
Events in quadrant B2,018,3142,212,015
Events in quadrant C2,118,6982,239,776
Events in quadrant D1,791,7721,949,130

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07100
B07100
C07100
D07100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01149470
B0910490
C0719200
D01005810

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3488129398.425791%
B3488119225.510163%
C348814741.358906%
D3488119585.613371%

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 41205 34879 0 0 0.00% 0.00%
B 41205 34870 0 0 0.00% 0.00%
C 41205 34881 0 0 0.00% 0.00%
D 41205 34871 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 2010 11.35 535 505 132.6
A 7 110 1690 8.94 535 505 132.6
A 9 19 1526 7.7 535 505 132.6
B 2 9 1644 10.81 535 516 104.3
B 5 128 1347 7.96 535 516 104.3
B 12 226 1299 7.5 535 516 104.3
C 1 80 1587 7.33 560 526 144.7
C 1 81 1562 7.16 560 526 144.7
C 12 241 1468 6.51 560 526 144.7
D 10 189 1300 6.19 511 471 134.0
D 7 3 1282 6.05 511 471 134.0
D 7 5 1267 5.94 511 471 134.0

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