ASTROSAT CZTI

Data Quality Report

Orbit 55142

Creation date: 2025-12-07T10:27:03.836398
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/AS1A14_022T16_9000006532_55142cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55142cztM0_level2_quad_clean.evt
Size (bytes)510,001,92095,572,800
Size486.4 MB 91.1 MB
Events in quadrant A3,922,323629,034
Events in quadrant B3,047,646713,465
Events in quadrant C3,060,902626,538
Events in quadrant D8,319,660451,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168792
B0142972
C0144352
D0294942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67923635.344523%
B6792650.957008%
C6792370.544759%
D6792163023.998822%

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 7892 6792 294 294 3.73% 4.33%
B 7892 6793 12 12 0.15% 0.18%
C 7892 6793 17 17 0.22% 0.25%
D 7891 6791 1631 1631 20.67% 24.02%

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 32 965756 5522.71 701 683 174.7
A 0 8 169741 967.45 701 683 174.7
A 8 6 16197 88.78 701 683 174.7
B 4 81 54516 350.74 716 691 153.5
B 10 247 44895 288.05 716 691 153.5
B 0 182 38740 247.94 716 691 153.5
C 6 223 100775 515.53 700 696 194.1
C 13 3 39504 199.91 700 696 194.1
C 15 178 37116 187.61 700 696 194.1
D 11 129 5285662 31365.93 594 569 168.5
D 11 176 126029 744.58 594 569 168.5
D 15 94 125530 741.62 594 569 168.5

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