ASTROSAT CZTI

Data Quality Report

Orbit 20190428_A05_226T06_9000002864_level2

Creation date: 2025-11-29T16:48:11.101033
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_226T06_9000002864cztM0_level2.fits modeM0/AS1A05_226T06_9000002864cztM0_level2_quad_clean.evt
Size (bytes)360,774,720357,865,920
Size344.1 MB 341.3 MB
Events in quadrant A2,247,7782,336,734
Events in quadrant B2,154,6482,330,499
Events in quadrant C2,183,6142,193,502
Events in quadrant D1,649,4701,291,017

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0801470
B0829670
C0811260
D01963110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07960
B07960
C07960
D07960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A391042390.611191%
B391044351.112418%
C391044141.058715%
D391041199630.677169%

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 43044 39101 0 0 0.00% 0.00%
B 43044 39100 0 0 0.00% 0.00%
C 43044 39101 0 0 0.00% 0.00%
D 43043 39050 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 2114 10.82 585 549 144.7
A 7 110 1808 8.7 585 549 144.7
A 15 236 1727 8.14 585 549 144.7
B 2 9 1689 10.13 568 541 113.3
B 3 17 1498 8.45 568 541 113.3
B 2 8 1454 8.06 568 541 113.3
C 12 241 1595 7.09 577 535 149.4
C 3 126 1516 6.57 577 535 149.4
C 9 209 1471 6.26 577 535 149.4
D 10 190 1193 5.97 471 429 127.9
D 3 14 1185 5.91 471 429 127.9
D 6 67 1172 5.81 471 429 127.9

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