ASTROSAT CZTI

Data Quality Report

Orbit 13951

Creation date: 2024-06-27T16:48:21.546073
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/AS1A04_026T04_9000002060_13951cztM0_level2.evt modeM0/AS1A04_026T04_9000002060_13951cztM0_level2_quad_clean.evt
Size (bytes)194,736,96047,784,960
Size185.7 MB 45.6 MB
Events in quadrant A1,167,569322,902
Events in quadrant B1,312,271324,594
Events in quadrant C1,156,245325,518
Events in quadrant D2,096,072300,811

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050550
B055380
C049200
D078100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240450.207987%
B2404110.457571%
C240410.041597%
D24041616.697171%

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 2405 2405 3 3 0.12% 0.12%
B 2405 2405 16 16 0.67% 0.67%
C 2405 2405 0 0 0.00% 0.00%
D 2405 2405 140 140 5.82% 5.82%

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 12 96 34507 594.89 278 271 57.5
A 15 222 20575 352.8 278 271 57.5
A 1 162 17741 303.56 278 271 57.5
B 0 189 107338 2047.21 277 270 52.3
B 3 64 41443 787.26 277 270 52.3
B 0 219 25846 489.03 277 270 52.3
C 3 233 69634 1079.55 278 280 64.2
C 13 61 2028 27.21 278 280 64.2
C 0 207 1570 20.08 278 280 64.2
D 13 122 685680 10160.33 273 265 67.5
D 8 195 126472 1870.84 273 265 67.5
D 1 52 90541 1338.22 273 265 67.5

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