ASTROSAT CZTI

Data Quality Report

Orbit 20161221_G06_135T01_9000000908_level2

Creation date: 2025-11-08T19:41:55.988950
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/AS1G06_135T01_9000000908cztM0_level2.fits modeM0/AS1G06_135T01_9000000908cztM0_level2_quad_clean.evt
Size (bytes)77,463,36062,712,000
Size73.9 MB 59.8 MB
Events in quadrant A469,530367,882
Events in quadrant B457,788366,028
Events in quadrant C465,592347,402
Events in quadrant D357,902222,192

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176630
B0182090
C0176900
D0300800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85601131.320093%
B85601461.705607%
C8560941.098131%
D8560166319.427570%

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 10520 8560 0 0 0.00% 0.00%
B 10520 8560 0 0 0.00% 0.00%
C 10520 8560 0 0 0.00% 0.00%
D 10520 8491 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 29 489 11.36 122 114 33.0
A 7 110 415 9.12 122 114 33.0
A 0 30 361 7.48 122 114 33.0
B 2 9 441 12.01 120 114 27.2
B 5 128 323 7.68 120 114 27.2
B 3 17 321 7.6 120 114 27.2
C 3 158 332 6.3 123 113 34.8
C 9 233 327 6.15 123 113 34.8
C 9 188 327 6.15 123 113 34.8
D 4 160 294 6.84 102 92 29.5
D 1 31 279 6.33 102 92 29.5
D 7 5 266 5.89 102 92 29.5

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