ASTROSAT CZTI

Data Quality Report

Orbit 21686

Creation date: 2024-06-27T18:31:06.342479
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/AS1A07_006T04_9000003210_21686cztM0_level2.evt modeM0/AS1A07_006T04_9000003210_21686cztM0_level2_quad_clean.evt
Size (bytes)481,573,44096,647,040
Size459.3 MB 92.2 MB
Events in quadrant A3,274,797618,966
Events in quadrant B3,378,576637,588
Events in quadrant C3,144,359613,230
Events in quadrant D4,330,633588,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140021
B0142671
C0136751
D0173633

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6709931.386198%
B67101301.937407%
C67101041.549925%
D67091792.668058%

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 7364 6710 1 1 0.01% 0.01%
B 7365 6711 21 21 0.29% 0.31%
C 7365 6711 0 0 0.00% 0.00%
D 7364 6710 102 102 1.39% 1.52%

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 4 2 126183 785.2 798 781 159.7
A 15 236 68584 424.55 798 781 159.7
A 13 254 11683 68.26 798 781 159.7
B 3 64 166225 1097.59 801 780 150.7
B 0 229 47630 310.81 801 780 150.7
B 12 111 18320 116.36 801 780 150.7
C 14 238 124156 692.93 769 775 178.1
C 10 22 8518 43.49 769 775 178.1
C 8 128 8399 42.82 769 775 178.1
D 1 52 319035 1708.99 769 743 186.2
D 12 235 270187 1446.72 769 743 186.2
D 1 20 255626 1368.53 769 743 186.2

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