ASTROSAT CZTI

Data Quality Report

Orbit 20750

Creation date: 2024-06-27T18:19:10.287305
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/AS1A05_013T01_9000003070_20750cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20750cztM0_level2_quad_clean.evt
Size (bytes)253,843,20044,651,520
Size242.1 MB 42.6 MB
Events in quadrant A1,788,592281,611
Events in quadrant B1,813,839277,365
Events in quadrant C1,816,370268,880
Events in quadrant D2,022,195268,586

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075331
B075771
C074221
D082691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3599170.472353%
B3599280.777994%
C3599391.083634%
D3599681.889414%

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 4419 3600 3 3 0.07% 0.08%
B 4419 3600 6 6 0.14% 0.17%
C 4419 3600 0 0 0.00% 0.00%
D 4419 3600 44 44 1.00% 1.22%

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 75294 824.99 445 437 90.7
A 0 226 3837 37.47 445 437 90.7
A 3 137 3719 36.17 445 437 90.7
B 7 220 46985 548.05 439 428 85.0
B 0 197 21087 243.19 439 428 85.0
B 12 111 10066 113.45 439 428 85.0
C 3 233 85492 853.18 421 423 99.7
C 14 238 65274 650.41 421 423 99.7
C 7 247 17451 170.78 421 423 99.7
D 1 52 177227 1676.37 428 416 105.5
D 5 222 121306 1146.18 428 416 105.5
D 13 138 47525 446.65 428 416 105.5

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