ASTROSAT CZTI

Data Quality Report

Orbit 20200403_A07_001T03_9000003602_level2

Creation date: 2025-12-10T10:55:52.365261
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/AS1A07_001T03_9000003602cztM0_level2.fits modeM0/AS1A07_001T03_9000003602cztM0_level2_quad_clean.evt
Size (bytes)146,188,800164,738,880
Size139.4 MB 157.1 MB
Events in quadrant A884,7061,021,359
Events in quadrant B848,9401,019,310
Events in quadrant C859,270977,829
Events in quadrant D751,350887,300

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03200
B03200
C03200
D03200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0318290
B0320830
C0319270
D0382800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156991771.127460%
B156992141.363144%
C156992701.719855%
D156993802.420536%

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 17304 15699 0 0 0.00% 0.00%
B 17304 15699 0 0 0.00% 0.00%
C 17304 15699 0 0 0.00% 0.00%
D 17304 15694 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 29 861 10.78 230 215 59.9
A 7 110 698 8.06 230 215 59.9
A 9 19 662 7.46 230 215 59.9
B 2 9 695 10.31 224 213 46.7
B 2 8 584 7.94 224 213 46.7
B 3 17 584 7.94 224 213 46.7
C 12 241 602 6.53 226 212 59.7
C 3 126 593 6.38 226 212 59.7
C 9 242 593 6.38 226 212 59.7
D 6 231 554 6.04 214 194 59.6
D 7 3 542 5.84 214 194 59.6
D 15 46 539 5.79 214 194 59.6

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