ASTROSAT CZTI

Data Quality Report

Orbit 20190924_A05_182T02_9000003202_level2

Creation date: 2025-12-03T23:15:46.027095
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_182T02_9000003202cztM0_level2.fits modeM0/AS1A05_182T02_9000003202cztM0_level2_quad_clean.evt
Size (bytes)175,101,120152,375,040
Size167.0 MB 145.3 MB
Events in quadrant A1,069,696859,705
Events in quadrant B1,031,578872,066
Events in quadrant C1,051,736857,188
Events in quadrant D910,082784,604

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369370
B0378850
C0372460
D0413720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17993930.516868%
B179931680.933696%
C179932271.261602%
D179932811.561718%

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 21993 17993 0 0 0.00% 0.00%
B 21993 17993 0 0 0.00% 0.00%
C 21993 17993 0 0 0.00% 0.00%
D 21993 17987 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 1013 10.8 278 262 69.5
A 9 19 833 8.22 278 262 69.5
A 7 110 814 7.94 278 262 69.5
B 2 9 801 9.89 272 261 54.6
B 5 128 726 8.52 272 261 54.6
B 3 17 679 7.66 272 261 54.6
C 12 241 765 6.94 277 260 72.8
C 3 126 726 6.4 277 260 72.8
C 2 191 711 6.2 277 260 72.8
D 6 38 669 6.04 260 237 71.5
D 15 46 657 5.87 260 237 71.5
D 3 14 656 5.86 260 237 71.5

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