ASTROSAT CZTI

Data Quality Report

Orbit 00770

Creation date: 2024-06-27T14:02:42.910103
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/AS1P01_010T01_9000000108_00770cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00770cztM0_level2_quad_clean.evt
Size (bytes)1,164,191,040110,206,080
Size1.1 GB 105.1 MB
Events in quadrant A8,706,322720,681
Events in quadrant B9,253,806719,649
Events in quadrant C8,647,272699,570
Events in quadrant D8,163,724687,040

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310470
B0327280
C0308930
D0295000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7333220.300014%
B7333330.450020%
C7334270.368148%
D73341441.963458%

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 7778 7335 281 281 3.61% 3.83%
B 7778 7335 354 354 4.55% 4.83%
C 7779 7336 246 246 3.16% 3.35%
D 7779 7336 283 283 3.64% 3.86%

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 0 117 144683 264.84 2223 2238 537.8
A 0 5 14158 22.16 2223 2238 537.8
A 12 189 13067 20.13 2223 2238 537.8
B 7 221 155343 278.42 2346 2357 549.5
B 0 220 76879 135.62 2346 2357 549.5
B 5 191 49486 85.77 2346 2357 549.5
C 10 17 63133 101.71 2151 2224 598.9
C 15 241 48570 77.39 2151 2224 598.9
C 10 207 46507 73.94 2151 2224 598.9
D 13 25 317450 497.05 2044 2110 634.4
D 12 188 79651 122.22 2044 2110 634.4
D 1 4 70817 108.3 2044 2110 634.4

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