ASTROSAT CZTI

Data Quality Report

Orbit 40735

Creation date: 2024-06-27T22:19:47.321552
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_066T01_9000005562_40735cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40735cztM0_level2_quad_clean.evt
Size (bytes)521,127,36080,084,160
Size497.0 MB 76.4 MB
Events in quadrant A3,797,288604,349
Events in quadrant B2,465,542649,221
Events in quadrant C9,475,063318,216
Events in quadrant D3,166,237504,314

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144793
B0103502
C0315772
D0126442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49642986.003223%
B496450.100725%
C4964277155.821918%
D496464913.074134%

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 7027 4965 258 258 3.67% 5.20%
B 7027 4965 0 0 0.00% 0.00%
C 7027 4964 2680 2680 38.14% 53.99%
D 7027 4964 117 117 1.67% 2.36%

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 13 248 959762 8121.91 582 571 118.1
A 10 83 457698 3870.7 582 571 118.1
A 12 189 130333 1098.75 582 571 118.1
B 4 170 58986 519.94 592 576 112.3
B 0 229 20800 180.02 592 576 112.3
B 4 171 19606 169.4 592 576 112.3
C 9 187 7419767 69630.43 457 461 106.6
C 15 214 168831 1580.16 457 461 106.6
C 14 254 66437 619.19 457 461 106.6
D 2 249 396150 2974.86 544 530 133.0
D 12 227 173463 1300.37 544 530 133.0
D 12 191 168563 1263.52 544 530 133.0

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