ASTROSAT CZTI

Data Quality Report

Orbit 20190924_A05_155T02_9000003200_level2

Creation date: 2025-12-03T22:58:13.044446
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_155T02_9000003200cztM0_level2.fits modeM0/AS1A05_155T02_9000003200cztM0_level2_quad_clean.evt
Size (bytes)420,281,280346,700,160
Size400.8 MB 330.6 MB
Events in quadrant A2,589,2601,966,857
Events in quadrant B2,474,8941,992,717
Events in quadrant C2,541,7941,896,715
Events in quadrant D2,213,9381,735,262

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08640
B08640
C08640
D08640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0915270
B0899970
C0888930
D01057860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4234512272.897627%
B4234210102.385338%
C4234210132.392424%
D4234619244.543522%

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 46510 42357 0 0 0.00% 0.00%
B 46510 42348 0 0 0.00% 0.00%
C 46510 42351 0 0 0.00% 0.00%
D 46510 42345 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 2418 10.86 673 631 164.6
A 7 110 2046 8.6 673 631 164.6
A 9 19 1988 8.25 673 631 164.6
B 2 9 1987 10.43 654 625 130.6
B 3 17 1650 7.85 654 625 130.6
B 2 8 1641 7.78 654 625 130.6
C 3 126 1712 6.29 671 627 172.5
C 2 191 1693 6.18 671 627 172.5
C 9 209 1691 6.17 671 627 172.5
D 6 231 1581 5.95 634 579 168.3
D 3 14 1538 5.7 634 579 168.3
D 10 189 1535 5.68 634 579 168.3

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