ASTROSAT CZTI

Data Quality Report

Orbit 16335

Creation date: 2024-06-27T17:21:15.185635
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_149T04_9000002410_16335cztM0_level2.evt modeM0/AS1A05_149T04_9000002410_16335cztM0_level2_quad_clean.evt
Size (bytes)852,572,160112,694,400
Size813.1 MB 107.5 MB
Events in quadrant A6,662,015676,614
Events in quadrant B8,910,756666,790
Events in quadrant C4,669,200707,662
Events in quadrant D4,922,473689,095

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263943
B0330362
C0201122
D0214972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96988879.146216%
B9698168017.323159%
C9698991.020829%
D9698991.020829%

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 11069 9701 679 679 6.13% 7.00%
B 11068 9700 1113 1113 10.06% 11.47%
C 11069 9701 0 0 0.00% 0.00%
D 11069 9701 44 44 0.40% 0.45%

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 15 174 2376970 10563.03 1113 1088 224.9
A 0 226 9818 38.81 1113 1088 224.9
A 12 194 8149 31.39 1113 1088 224.9
B 3 112 4310285 21268.59 1066 1040 202.6
B 0 189 109750 536.55 1066 1040 202.6
B 5 65 90517 441.62 1066 1040 202.6
C 14 238 169415 645.87 1110 1115 260.6
C 3 233 162435 619.08 1110 1115 260.6
C 0 207 9598 32.55 1110 1115 260.6
D 12 218 395178 1450.68 1120 1087 271.7
D 12 110 124342 453.71 1120 1087 271.7
D 10 70 74655 270.81 1120 1087 271.7

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