ASTROSAT CZTI

Data Quality Report

Orbit 19437

Creation date: 2024-06-27T18:02:53.915194
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/AS1A05_221T01_9000002888_19437cztM0_level2.evt modeM0/AS1A05_221T01_9000002888_19437cztM0_level2_quad_clean.evt
Size (bytes)2,578,824,000404,245,440
Size2.4 GB 385.5 MB
Events in quadrant A16,180,8042,529,916
Events in quadrant B16,967,9392,560,187
Events in quadrant C16,480,1312,487,537
Events in quadrant D26,228,9592,380,984

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06740
B06740
C06740
D06740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0690476
B0712616
C0696926
D01007036

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A332671960.589172%
B332673701.112213%
C332673621.088165%
D3326724637.403733%

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 38292 33270 3 3 0.01% 0.01%
B 38292 33268 73 73 0.19% 0.22%
C 38292 33268 4 4 0.01% 0.01%
D 38292 33269 2018 2018 5.27% 6.07%

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 1 272393 324.35 4110 4027 827.4
A 13 254 51652 57.56 4110 4027 827.4
A 12 96 38860 42.1 4110 4027 827.4
B 7 220 364907 470.1 4073 3968 767.8
B 0 198 175983 224.04 4073 3968 767.8
B 3 64 139474 176.49 4073 3968 767.8
C 14 238 615112 666.63 3942 3976 916.8
C 9 221 298576 321.35 3942 3976 916.8
C 3 233 178156 190.0 3942 3976 916.8
D 7 238 9559418 10076.61 3914 3802 948.3
D 1 52 1590923 1673.65 3914 3802 948.3
D 2 234 136194 139.61 3914 3802 948.3

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