ASTROSAT CZTI

Data Quality Report

Orbit 20190828_A06_009T03_9000003128_level2

Creation date: 2025-12-03T09:12:53.638024
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/AS1A06_009T03_9000003128cztM0_level2.fits modeM0/AS1A06_009T03_9000003128cztM0_level2_quad_clean.evt
Size (bytes)78,704,64073,082,880
Size75.1 MB 69.7 MB
Events in quadrant A484,884446,085
Events in quadrant B466,310445,363
Events in quadrant C476,798428,742
Events in quadrant D371,756308,979

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174760
B0179470
C0172070
D0418120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83871231.466555%
B83871371.633480%
C83871541.836175%
D8387177721.187552%

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 9807 8385 0 0 0.00% 0.00%
B 9807 8386 0 0 0.00% 0.00%
C 9807 8385 0 0 0.00% 0.00%
D 9807 8382 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 29 435 9.36 126 118 33.9
A 7 110 392 8.09 126 118 33.9
A 9 19 380 7.73 126 118 33.9
B 2 9 393 10.23 123 117 27.0
B 2 8 337 8.15 123 117 27.0
B 3 17 333 8.01 123 117 27.0
C 1 80 381 7.75 125 117 34.1
C 1 81 371 7.45 125 117 34.1
C 2 191 338 6.49 125 117 34.1
D 4 246 300 6.96 105 96 29.3
D 6 67 286 6.49 105 96 29.3
D 6 83 263 5.7 105 96 29.3

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