ASTROSAT CZTI

Data Quality Report

Orbit 12300

Creation date: 2024-06-27T16:25:07.973231
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/AS1A04_183T02_9000001816_12300cztM0_level2.evt modeM0/AS1A04_183T02_9000001816_12300cztM0_level2_quad_clean.evt
Size (bytes)487,422,72068,978,880
Size464.8 MB 65.8 MB
Events in quadrant A4,522,719402,960
Events in quadrant B3,701,923424,833
Events in quadrant C3,062,290419,694
Events in quadrant D3,047,342401,547

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176392
B0150471
C0132841
D0133251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63023695.855284%
B63021482.348461%
C6302410.650587%
D6302280.444303%

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 7448 6304 176 176 2.36% 2.79%
B 7448 6304 88 88 1.18% 1.40%
C 7448 6304 22 22 0.30% 0.35%
D 7448 6304 10 10 0.13% 0.16%

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 0 23 1215314 7957.55 746 732 152.6
A 1 162 139362 908.26 746 732 152.6
A 0 226 83194 540.26 746 732 152.6
B 4 239 533218 3708.39 757 739 143.6
B 3 64 58550 402.62 757 739 143.6
B 0 85 40695 278.27 757 739 143.6
C 14 234 153303 886.57 739 744 172.1
C 15 208 22390 125.79 739 744 172.1
C 13 61 5420 27.17 739 744 172.1
D 11 129 86464 483.8 731 713 177.2
D 13 249 48752 271.03 731 713 177.2
D 2 234 30597 168.6 731 713 177.2

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