ASTROSAT CZTI

Data Quality Report

Orbit 36599

Creation date: 2024-06-27T21:28:58.868131
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/AS1A11_097T24_9000005224_36599cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36599cztM0_level2_quad_clean.evt
Size (bytes)491,379,84085,271,040
Size468.6 MB 81.3 MB
Events in quadrant A3,129,735557,588
Events in quadrant B3,038,318560,222
Events in quadrant C3,746,835533,750
Events in quadrant D4,551,633503,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131123
B0128212
C0148322
D0176422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6113260.425323%
B6113160.261737%
C61132063.369867%
D61134717.704891%

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 8888 6115 7 7 0.08% 0.11%
B 8888 6115 2 2 0.02% 0.03%
C 8888 6115 154 154 1.73% 2.52%
D 8888 6114 387 387 4.35% 6.33%

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 218410 1500.68 720 707 145.1
A 15 223 68557 467.71 720 707 145.1
A 9 143 41952 284.31 720 707 145.1
B 0 213 69592 495.35 713 694 139.1
B 0 190 53325 378.4 713 694 139.1
B 4 171 41242 291.53 713 694 139.1
C 0 207 414358 2594.01 679 684 159.5
C 0 10 376170 2354.55 679 684 159.5
C 15 214 257372 1609.6 679 684 159.5
D 13 171 1081709 6552.3 675 656 165.0
D 2 153 322560 1951.07 675 656 165.0
D 12 235 181281 1094.77 675 656 165.0

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