ASTROSAT CZTI

Data Quality Report

Orbit 39978

Creation date: 2024-06-27T22:10:51.114026
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/AS1A12_054T03_9000005516_39978cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_39978cztM0_level2_quad_clean.evt
Size (bytes)605,638,080165,686,400
Size577.6 MB 158.0 MB
Events in quadrant A5,073,7361,105,711
Events in quadrant B4,999,2591,135,741
Events in quadrant C4,918,0291,098,835
Events in quadrant D6,646,609979,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215273
B0218802
C0210432
D0269662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10064170.168919%
B10064770.765103%
C10064680.675676%
D100644524.491256%

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 13348 10066 6 6 0.04% 0.06%
B 13348 10064 42 42 0.31% 0.42%
C 13347 10063 60 60 0.45% 0.60%
D 13348 10064 439 439 3.29% 4.36%

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 741338 3284.82 1097 1076 225.4
A 6 10 69641 304.25 1097 1076 225.4
A 15 191 19698 82.63 1097 1076 225.4
B 4 171 508813 2399.99 1092 1061 211.6
B 15 201 74638 347.78 1092 1061 211.6
B 0 221 41216 189.8 1092 1061 211.6
C 15 214 415044 1652.69 1074 1079 250.5
C 0 10 181297 719.49 1074 1079 250.5
C 14 254 58345 228.62 1074 1079 250.5
D 12 227 600559 2330.32 1049 1019 257.3
D 2 249 504658 1957.57 1049 1019 257.3
D 12 233 342775 1328.35 1049 1019 257.3

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