ASTROSAT CZTI

Data Quality Report

Orbit 20220214_A05_103T05_9000004930_level2

Creation date: 2026-01-01T02:37:40.406371
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_103T05_9000004930cztM0_level2.fits modeM0/AS1A05_103T05_9000004930cztM0_level2_quad_clean.evt
Size (bytes)442,569,600436,389,120
Size422.1 MB 416.2 MB
Events in quadrant A2,795,7622,743,017
Events in quadrant B2,566,3382,627,339
Events in quadrant C2,733,0822,605,197
Events in quadrant D2,050,3401,987,221

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01600
C01600
D01610

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0974170
B01288110
C01041240
D02042030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09640
B09640
C09640
D09640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A474061070.225710%
B4740627365.771421%
C474062300.485171%
D47406991120.906636%

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 63356 47406 0 0 0.00% 0.00%
B 63356 47385 0 0 0.00% 0.00%
C 63356 47406 0 0 0.00% 0.00%
D 63356 47021 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 9 19 2301 9.11 730 688 177.1
A 0 29 2222 8.66 730 688 177.1
A 7 110 2208 8.58 730 688 177.1
B 2 9 2296 12.64 680 651 130.2
B 3 80 1993 10.31 680 651 130.2
B 2 8 1830 9.06 680 651 130.2
C 1 81 2298 8.95 721 679 180.9
C 1 80 2266 8.77 721 679 180.9
C 3 203 2090 7.8 721 679 180.9
D 10 189 1535 6.41 589 539 155.3
D 10 113 1513 6.27 589 539 155.3
D 7 3 1502 6.2 589 539 155.3

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