ASTROSAT CZTI

Data Quality Report

Orbit 10276

Creation date: 2024-06-27T15:57:19.200402
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/AS1C02_021T01_9000001482_10276cztM0_level2.evt modeM0/AS1C02_021T01_9000001482_10276cztM0_level2_quad_clean.evt
Size (bytes)447,226,560124,548,480
Size426.5 MB 118.8 MB
Events in quadrant A3,073,386862,448
Events in quadrant B3,421,261855,295
Events in quadrant C2,864,544826,732
Events in quadrant D3,775,734807,140

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01285611
B0138784
C0124849
D0150428

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60271282.123776%
B60301632.703151%
C6027871.443504%
D60281752.903119%

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 7336 6031 0 0 0.00% 0.00%
B 7336 6031 28 28 0.38% 0.46%
C 7336 6031 0 0 0.00% 0.00%
D 7336 6031 65 65 0.89% 1.08%

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 8 5 24257 147.86 787 774 158.8
A 8 15 13894 82.61 787 774 158.8
A 0 226 7418 41.83 787 774 158.8
B 4 239 155249 1094.51 760 744 141.2
B 11 51 114483 805.72 760 744 141.2
B 0 85 60373 422.41 760 744 141.2
C 13 61 5519 28.42 733 737 168.2
C 14 234 4251 20.89 733 737 168.2
C 3 202 1895 6.88 733 737 168.2
D 8 195 365582 2026.12 752 734 180.1
D 12 233 245764 1360.73 752 734 180.1
D 2 152 124793 688.94 752 734 180.1

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