ASTROSAT CZTI

Data Quality Report

Orbit 30686

Creation date: 2024-06-27T20:18:43.177016
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/AS1A10_094T82_9000004428_30686cztM0_level2.evt modeM0/AS1A10_094T82_9000004428_30686cztM0_level2_quad_clean.evt
Size (bytes)188,438,40043,974,720
Size179.7 MB 41.9 MB
Events in quadrant A1,064,419312,172
Events in quadrant B1,497,939311,294
Events in quadrant C1,115,767299,956
Events in quadrant D1,911,276283,078

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043421
B054291
C045961
D068561

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1703442.583676%
B1703724.227833%
C17031066.224310%
D170320912.272460%

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 2998 1704 0 0 0.00% 0.00%
B 2998 1704 1 1 0.03% 0.06%
C 2998 1704 0 0 0.00% 0.00%
D 2998 1704 126 126 4.20% 7.39%

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 13 27453 505.49 266 261 53.8
A 8 192 11039 200.36 266 261 53.8
A 13 254 3067 52.16 266 261 53.8
B 6 159 460410 9312.71 261 254 49.4
B 12 111 5541 107.0 261 254 49.4
B 6 36 5319 102.51 261 254 49.4
C 0 10 49137 810.7 257 259 60.3
C 14 238 42876 706.85 257 259 60.3
C 3 233 15304 249.54 257 259 60.3
D 8 195 684022 11348.8 255 250 60.3
D 1 52 128754 2132.83 255 250 60.3
D 2 250 121923 2019.45 255 250 60.3

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