ASTROSAT CZTI

Data Quality Report

Orbit 33186

Creation date: 2024-06-27T20:45:51.532218
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_080T02_9000004768_33186cztM0_level2.evt modeM0/AS1A11_080T02_9000004768_33186cztM0_level2_quad_clean.evt
Size (bytes)514,609,92073,019,520
Size490.8 MB 69.6 MB
Events in quadrant A2,565,871462,557
Events in quadrant B4,870,278463,861
Events in quadrant C2,780,176456,438
Events in quadrant D4,981,632428,970

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114923
B0183782
C0120692
D0188672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A570850.087596%
B570877413.559916%
C5708440.770848%
D57082334.081990%

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 7261 5709 0 0 0.00% 0.00%
B 7261 5709 450 450 6.20% 7.88%
C 7261 5709 25 25 0.34% 0.44%
D 7261 5709 174 174 2.40% 3.05%

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 13 6 11162 79.46 658 645 132.4
A 13 254 10351 73.33 658 645 132.4
A 3 137 6225 42.16 658 645 132.4
B 5 172 1424943 12046.71 621 607 118.2
B 0 219 586530 4955.6 621 607 118.2
B 5 200 296001 2498.38 621 607 118.2
C 0 10 123955 833.98 634 638 147.9
C 9 187 60086 402.04 634 638 147.9
C 3 233 50649 338.22 634 638 147.9
D 8 195 1255126 7483.78 620 605 167.6
D 7 223 543699 3239.8 620 605 167.6
D 10 203 311420 1854.15 620 605 167.6

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