ASTROSAT CZTI

Data Quality Report

Orbit 20747

Creation date: 2024-06-27T18:19:07.227761
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_101T10_9000003068_20747cztM0_level2.evt modeM0/AS1A05_101T10_9000003068_20747cztM0_level2_quad_clean.evt
Size (bytes)414,982,08084,107,520
Size395.8 MB 80.2 MB
Events in quadrant A2,323,174567,371
Events in quadrant B2,475,872566,947
Events in quadrant C2,826,753542,209
Events in quadrant D4,601,074518,986

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102472
B0107123
C0117002
D0171472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5005130.259740%
B5004400.799361%
C50042074.136691%
D500474314.848122%

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 5315 5007 0 0 0.00% 0.00%
B 5314 5006 5 5 0.09% 0.10%
C 5314 5006 87 87 1.64% 1.74%
D 5314 5006 594 594 11.18% 11.87%

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 5 16 12599 98.64 600 587 121.8
A 0 226 5265 38.41 600 587 121.8
A 3 137 5044 36.6 600 587 121.8
B 7 220 73018 634.67 597 581 114.1
B 0 190 22108 188.61 597 581 114.1
B 12 111 13630 114.33 597 581 114.1
C 9 54 481636 3588.66 571 574 134.1
C 14 238 88539 656.21 571 574 134.1
C 3 233 12772 90.99 571 574 134.1
D 5 222 1603283 12042.0 545 530 133.1
D 1 52 701661 5267.82 545 530 133.1
D 1 20 190230 1425.28 545 530 133.1

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