ASTROSAT CZTI

Data Quality Report

Orbit 53552

Creation date: 2025-08-22T12:59:12.172979
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_004T05_9000006502_53552cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53552cztM0_level2_quad_clean.evt
Size (bytes)917,717,760137,520,000
Size875.2 MB 131.1 MB
Events in quadrant A10,077,455810,984
Events in quadrant B6,179,523999,890
Events in quadrant C9,234,135827,781
Events in quadrant D7,694,486822,096

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02060
B02060
C02060
D02060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0369602
B0253542
C0344662
D0299513

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10146189218.647743%
B101464504.435245%
C10146117711.600631%
D101457197.087235%

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 11546 10146 1609 1609 13.94% 15.86%
B 11546 10146 279 279 2.42% 2.75%
C 11546 10146 1039 1039 9.00% 10.24%
D 11545 10145 671 671 5.81% 6.61%

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 63 4056731 16265.83 1019 993 249.3
A 12 115 1136596 4554.42 1019 993 249.3
A 15 174 663161 2655.67 1019 993 249.3
B 2 249 1289001 5581.35 1082 1044 230.8
B 2 136 127236 546.85 1082 1044 230.8
B 0 213 124808 536.33 1082 1044 230.8
C 15 224 3865174 13942.88 1019 1014 277.1
C 1 241 620896 2236.69 1019 1014 277.1
C 4 5 218234 783.79 1019 1014 277.1
D 15 94 763540 2538.23 1051 1005 300.4
D 4 7 716726 2382.41 1051 1005 300.4
D 3 12 485295 1612.05 1051 1005 300.4

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