ASTROSAT CZTI

Data Quality Report

Orbit 14852

Creation date: 2024-06-27T17:00:28.239330
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_218T01_9000002194_14852cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14852cztM0_level2_quad_clean.evt
Size (bytes)503,697,600115,940,160
Size480.4 MB 110.6 MB
Events in quadrant A3,609,978778,761
Events in quadrant B3,917,936764,092
Events in quadrant C3,780,740749,818
Events in quadrant D3,483,850744,710

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148523
B0160592
C0153192
D0148012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68031812.660591%
B68032053.013376%
C68031392.043216%
D68031802.645892%

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 7949 6805 1 1 0.01% 0.01%
B 7949 6805 28 28 0.35% 0.41%
C 7949 6805 3 3 0.04% 0.04%
D 7949 6805 33 33 0.42% 0.48%

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 12 189 86372 469.43 903 885 182.1
A 9 143 31258 166.78 903 885 182.1
A 15 239 9256 45.96 903 885 182.1
B 3 64 166077 998.19 881 860 165.5
B 0 219 68549 408.96 881 860 165.5
B 0 229 62809 374.28 881 860 165.5
C 3 233 374470 1913.44 855 860 195.3
C 6 96 65133 329.17 855 860 195.3
C 13 61 6261 27.66 855 860 195.3
D 7 254 79008 374.79 870 847 208.5
D 7 38 58461 276.27 870 847 208.5
D 2 120 27539 127.99 870 847 208.5

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