ASTROSAT CZTI

Data Quality Report

Orbit 31323

Creation date: 2024-06-27T20:26:40.598254
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/AS1A10_053T30_9000004536_31323cztM0_level2.evt modeM0/AS1A10_053T30_9000004536_31323cztM0_level2_quad_clean.evt
Size (bytes)1,358,570,880209,738,880
Size1.3 GB 200.0 MB
Events in quadrant A8,163,8921,362,277
Events in quadrant B13,196,5411,342,823
Events in quadrant C9,605,5841,278,603
Events in quadrant D9,129,5591,294,157

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0335452
B0500542
C0385102
D0369332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155791020.654728%
B155804092.625160%
C155806193.973042%
D15580890.571245%

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 19299 15582 0 0 0.00% 0.00%
B 19300 15583 47 47 0.24% 0.30%
C 19300 15583 38 38 0.20% 0.24%
D 19300 15583 17 17 0.09% 0.11%

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 57636 133.9 2103 2070 415.0
A 13 254 28900 64.65 2103 2070 415.0
A 3 137 19852 42.85 2103 2070 415.0
B 6 159 4132852 10858.77 2038 1993 380.4
B 4 80 534576 1400.0 2038 1993 380.4
B 0 190 241486 629.55 2038 1993 380.4
C 3 233 1134343 2505.44 1962 1982 452.0
C 14 238 423438 932.5 1962 1982 452.0
C 0 10 172714 377.76 1962 1982 452.0
D 8 195 1065325 2204.67 2039 1988 482.3
D 12 79 253644 521.77 2039 1988 482.3
D 2 250 89315 181.06 2039 1988 482.3

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