ASTROSAT CZTI

Data Quality Report

Orbit 57715

Creation date: 2026-05-29T13:36:45.327810
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/AS1A14_125T09_9000006578_57715cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57715cztM0_level2_quad_clean.evt
Size (bytes)534,654,72084,026,880
Size509.9 MB 80.1 MB
Events in quadrant A2,623,821595,145
Events in quadrant B5,001,983533,274
Events in quadrant C6,365,851500,194
Events in quadrant D5,328,580492,435

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122981
B0188851
C0231571
D0199573

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6057250.412746%
B6057113918.804689%
C6057104917.318805%
D605663210.435931%

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 7087 6058 0 0 0.00% 0.00%
B 7087 6058 997 997 14.07% 16.46%
C 7087 6057 785 785 11.08% 12.96%
D 7086 6057 570 570 8.04% 9.41%

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 3 128 43573 262.57 661 644 163.5
A 3 245 10843 62.38 661 644 163.5
A 3 62 8118 45.71 661 644 163.5
B 4 80 2441259 19651.59 582 560 124.2
B 0 155 103731 830.69 582 560 124.2
B 5 185 43177 343.14 582 560 124.2
C 15 224 3430840 20901.3 603 596 164.1
C 12 254 288540 1754.51 603 596 164.1
C 6 223 150998 916.44 603 596 164.1
D 8 160 1949526 11079.35 622 593 175.9
D 3 12 464890 2639.45 622 593 175.9
D 8 240 144163 816.17 622 593 175.9

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