ASTROSAT CZTI

Data Quality Report

Orbit 39783

Creation date: 2024-06-27T22:08:58.009667
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/AS1T05_086T01_9000005496_39783cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39783cztM0_level2_quad_clean.evt
Size (bytes)345,539,52099,745,920
Size329.5 MB 95.1 MB
Events in quadrant A2,985,403696,179
Events in quadrant B3,150,732689,692
Events in quadrant C3,382,893661,078
Events in quadrant D2,857,451601,086

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121253
B0128182
C0134902
D0120492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5323190.356942%
B53231182.216795%
C5323631.183543%
D5323931.747135%

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 7084 5324 8 8 0.11% 0.15%
B 7084 5324 79 79 1.12% 1.48%
C 7084 5324 54 54 0.76% 1.01%
D 7084 5324 85 85 1.20% 1.60%

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 481657 3737.55 613 605 128.7
A 2 79 73109 563.32 613 605 128.7
A 9 143 36306 277.38 613 605 128.7
B 5 172 517593 4306.34 606 593 120.1
B 5 32 89217 738.19 606 593 120.1
B 15 85 59607 491.56 606 593 120.1
C 15 208 426567 3003.17 595 601 141.8
C 14 254 391700 2757.34 595 601 141.8
C 15 214 221265 1555.74 595 601 141.8
D 13 249 276102 1831.54 592 576 150.4
D 6 240 115193 761.91 592 576 150.4
D 12 233 53318 350.6 592 576 150.4

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