ASTROSAT CZTI

Data Quality Report

Orbit 36425

Creation date: 2022-07-19T02:52:42.813414
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_009T01_9000005200_36425cztM0_level2.evt modeM0/AS1C07_009T01_9000005200_36425cztM0_level2_quad_clean.evt
Size (bytes)454,121,28099,083,520
Size433.1 MB 94.5 MB
Events in quadrant A2,811,746663,460
Events in quadrant B4,061,885645,607
Events in quadrant C3,067,174651,404
Events in quadrant D3,408,075624,412

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122313
B0160982
C0126592
D0142912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A594970.117667%
B59493175.328627%
C5949580.974954%
D59491101.849050%

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 8844 5951 0 0 0.00% 0.00%
B 8844 5951 208 208 2.35% 3.50%
C 8844 5951 36 36 0.41% 0.60%
D 8844 5951 73 73 0.83% 1.23%

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 195394 1434.95 672 658 135.7
A 13 254 10970 75.99 672 658 135.7
A 13 6 10452 72.17 672 658 135.7
B 5 172 593105 4728.27 652 633 125.3
B 5 255 364127 2900.89 652 633 125.3
B 0 189 195943 1558.69 652 633 125.3
C 15 214 253970 1669.93 652 656 151.7
C 0 10 232619 1529.18 652 656 151.7
C 4 254 19689 125.47 652 656 151.7
D 12 6 184909 1166.67 652 633 158.0
D 2 250 120821 760.92 652 633 158.0
D 12 233 115260 725.71 652 633 158.0

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