ASTROSAT CZTI

Data Quality Report

Orbit 32799

Creation date: 2024-06-27T20:42:09.095977
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_064T01_9000004730_32799cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32799cztM0_level2_quad_clean.evt
Size (bytes)545,932,80051,010,560
Size520.6 MB 48.6 MB
Events in quadrant A3,062,239297,438
Events in quadrant B3,440,569301,720
Events in quadrant C2,914,401304,227
Events in quadrant D6,751,801263,151

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121533
B0135612
C0116102
D0238842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5382460.854701%
B53821302.415459%
C5382400.743218%
D538260511.241174%

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 7324 5383 31 31 0.42% 0.58%
B 7324 5383 77 77 1.05% 1.43%
C 7324 5383 25 25 0.34% 0.46%
D 7324 5383 515 515 7.03% 9.57%

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 15 237 151576 1072.76 702 692 140.6
A 14 238 73520 517.8 702 692 140.6
A 7 16 60771 427.15 702 692 140.6
B 5 172 335173 2559.83 707 693 130.7
B 0 189 129257 983.92 707 693 130.7
B 0 219 97803 743.19 707 693 130.7
C 0 10 137394 873.41 683 691 156.5
C 3 233 84292 534.14 683 691 156.5
C 15 159 5542 30.99 683 691 156.5
D 8 195 1846631 11800.49 655 641 156.4
D 10 203 714448 4563.01 655 641 156.4
D 2 152 465122 2969.19 655 641 156.4

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