ASTROSAT CZTI

Data Quality Report

Orbit 27661

Creation date: 2024-06-27T19:42:43.101566
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/AS1T03_257T01_9000003976_27661cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27661cztM0_level2_quad_clean.evt
Size (bytes)608,987,52098,449,920
Size580.8 MB 93.9 MB
Events in quadrant A3,224,492665,104
Events in quadrant B3,347,295691,667
Events in quadrant C3,333,013642,762
Events in quadrant D8,117,541548,016

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133470
B0137550
C0136630
D0283420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215290.466613%
B6215420.675784%
C6215841.351569%
D6215180729.074819%

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 7585 6216 4 4 0.05% 0.06%
B 7585 6215 1 1 0.01% 0.02%
C 7585 6215 3 3 0.04% 0.05%
D 7585 6216 1545 1545 20.37% 24.86%

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 8 192 12446 70.66 830 815 164.6
A 13 254 10923 61.41 830 815 164.6
A 3 137 7196 38.77 830 815 164.6
B 0 230 38988 248.58 836 817 153.6
B 12 111 17783 110.49 836 817 153.6
B 11 111 16038 99.12 836 817 153.6
C 14 238 132456 704.15 805 812 187.0
C 2 16 33674 175.77 805 812 187.0
C 3 233 17580 89.69 805 812 187.0
D 1 52 5330160 33630.24 668 651 158.5
D 7 80 185636 1167.29 668 651 158.5
D 2 250 47307 294.41 668 651 158.5

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