ASTROSAT CZTI

Data Quality Report

Orbit 58308

Creation date: 2026-07-08T10:14:09.078593
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_044T03_9000006588_58308cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58308cztM0_level2_quad_clean.evt
Size (bytes)419,898,24091,071,360
Size400.4 MB 86.9 MB
Events in quadrant A3,053,034596,995
Events in quadrant B5,051,160592,817
Events in quadrant C3,203,959578,470
Events in quadrant D3,736,596542,338

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136482
B0193882
C0142212
D0154352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406851.326881%
B640673411.458008%
C6406871.358102%
D6406290.452701%

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 7767 6587 50 50 0.64% 0.76%
B 7767 6587 516 516 6.64% 7.83%
C 7767 6587 60 60 0.77% 0.91%
D 7767 6588 12 12 0.15% 0.18%

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 12 114 138110 775.45 715 696 177.2
A 8 61 54878 305.76 715 696 177.2
A 4 238 34271 189.47 715 696 177.2
B 4 206 1080782 7418.05 681 658 145.6
B 2 249 552262 3788.29 681 658 145.6
B 5 185 454526 3117.06 681 658 145.6
C 1 12 140769 729.92 694 690 191.9
C 12 249 113535 588.01 694 690 191.9
C 15 198 59457 306.22 694 690 191.9
D 12 110 460576 2364.73 688 659 194.5
D 11 129 306191 1570.94 688 659 194.5
D 12 128 86977 443.82 688 659 194.5

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