ASTROSAT CZTI

Data Quality Report

Orbit 36031

Creation date: 2022-08-09T22:00:59.366629
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/AS1T04_069T01_9000005158_36031cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36031cztM0_level2_quad_clean.evt
Size (bytes)1,930,824,000242,372,160
Size1.8 GB 231.1 MB
Events in quadrant A10,951,7881,519,558
Events in quadrant B13,925,4281,492,902
Events in quadrant C14,246,6971,471,430
Events in quadrant D17,878,9391,350,373

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0451697
B0547356
C0549526
D0676546

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04460
B04460
C04460
D04460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21872300.137162%
B218728754.000549%
C218727613.479334%
D2187215737.191843%

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 32126 21877 2 2 0.01% 0.01%
B 32126 21875 643 643 2.00% 2.94%
C 32126 21877 650 650 2.02% 2.97%
D 32126 21877 1491 1491 4.64% 6.82%

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 10 83 587657 1102.65 2671 2625 530.6
A 13 254 33688 58.55 2671 2625 530.6
A 13 6 27451 46.79 2671 2625 530.6
B 5 236 1922229 3916.66 2619 2551 490.1
B 5 172 581162 1180.52 2619 2551 490.1
B 5 255 465701 944.95 2619 2551 490.1
C 9 187 2087933 3571.05 2563 2581 584.0
C 15 214 892507 1523.95 2563 2581 584.0
C 0 10 687666 1173.17 2563 2581 584.0
D 12 227 3351075 5508.04 2527 2464 608.0
D 12 235 1439074 2363.04 2527 2464 608.0
D 13 249 877399 1439.16 2527 2464 608.0

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