ASTROSAT CZTI

Data Quality Report

Orbit 35174

Creation date: 2022-03-31T17:43:24.093488
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/AS1C07_001T06_9000005046_35174cztM0_level2.evt modeM0/AS1C07_001T06_9000005046_35174cztM0_level2_quad_clean.evt
Size (bytes)720,132,480100,604,160
Size686.8 MB 95.9 MB
Events in quadrant A2,639,366750,955
Events in quadrant B9,121,344544,591
Events in quadrant C2,999,367728,114
Events in quadrant D6,710,228669,198

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108443
B0306012
C0117312
D0234642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5024130.258758%
B5024278055.334395%
C5024981.950637%
D502558111.562189%

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 7057 5025 2 2 0.03% 0.04%
B 7057 5025 2038 2038 28.88% 40.56%
C 7057 5025 80 80 1.13% 1.59%
D 7058 5026 692 692 9.80% 13.77%

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 10 83 97836 759.53 642 633 128.0
A 9 143 35990 276.28 642 633 128.0
A 13 6 15328 114.83 642 633 128.0
B 5 236 6576385 72165.14 483 472 91.1
B 5 172 495153 5428.71 483 472 91.1
B 4 232 64883 706.86 483 472 91.1
C 0 10 289420 2099.24 607 613 137.6
C 15 214 210430 1525.09 607 613 137.6
C 0 207 43223 309.72 607 613 137.6
D 8 195 3748987 25227.2 611 593 148.6
D 10 118 99789 667.6 611 593 148.6
D 7 80 79155 528.73 611 593 148.6

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