ASTROSAT CZTI

Data Quality Report

Orbit 20869

Creation date: 2024-06-27T18:20:31.323159
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_160T01_9000003078_20869cztM0_level2.evt modeM0/AS1A05_160T01_9000003078_20869cztM0_level2_quad_clean.evt
Size (bytes)456,333,12063,780,480
Size435.2 MB 60.8 MB
Events in quadrant A2,403,537416,326
Events in quadrant B2,527,723432,800
Events in quadrant C2,434,087391,420
Events in quadrant D6,120,605345,187

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0111
D0111

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112981131
B0115021020
C0114451165
D0246043021

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011113
B011212
C011110
D01108

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4929400.811524%
B4994551.101322%
C4930721.460446%
D482478316.231343%

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 7343 5064 0 0 0.00% 0.00%
B 7358 5116 1 1 0.01% 0.02%
C 7327 5065 0 0 0.00% 0.00%
D 7252 4964 625 625 8.62% 12.59%

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 3 137 5310 36.85 625 614 127.4
A 0 226 5233 36.25 625 614 127.4
A 12 194 4409 29.78 625 614 127.4
B 0 230 20812 166.82 633 618 121.0
B 12 111 14708 116.4 633 618 121.0
B 11 111 13073 102.89 633 618 121.0
C 14 238 93759 669.29 592 596 139.2
C 9 54 20214 140.94 592 596 139.2
C 3 233 6996 45.98 592 596 139.2
D 1 20 2023955 14794.3 561 544 136.8
D 1 52 1747227 12770.99 561 544 136.8
D 5 222 94731 688.65 561 544 136.8

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