ASTROSAT CZTI

Data Quality Report

Orbit 21903

Creation date: 2024-06-27T18:33:45.399131
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/AS1A07_010T11_9000003240_21903cztM0_level2.evt modeM0/AS1A07_010T11_9000003240_21903cztM0_level2_quad_clean.evt
Size (bytes)491,647,68064,373,760
Size468.9 MB 61.4 MB
Events in quadrant A2,299,468417,662
Events in quadrant B2,461,241427,111
Events in quadrant C2,410,689402,364
Events in quadrant D7,389,504362,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099451
B0104261
C0102871
D0252941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4840130.268595%
B4839501.033271%
C4839521.074602%
D4839192639.801612%

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 5550 4841 4 4 0.07% 0.08%
B 5549 4840 20 20 0.36% 0.41%
C 5549 4840 7 7 0.13% 0.14%
D 5549 4839 1828 1828 32.94% 37.78%

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 47876 401.81 582 568 117.7
A 13 254 8868 70.5 582 568 117.7
A 3 1 5184 39.21 582 568 117.7
B 3 64 136694 1232.37 582 568 110.5
B 12 111 13051 113.01 582 568 110.5
B 0 197 11645 100.28 582 568 110.5
C 10 22 134532 1015.07 561 565 132.0
C 14 238 88000 662.49 561 565 132.0
C 13 61 4112 26.88 561 565 132.0
D 7 238 5326240 44162.66 497 482 120.6
D 1 52 43056 353.04 497 482 120.6
D 2 136 36419 298.0 497 482 120.6

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