ASTROSAT CZTI

Data Quality Report

Orbit 57467

Creation date: 2026-05-12T20:51:50.260417
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_113T09_9000006574_57467cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57467cztM0_level2_quad_clean.evt
Size (bytes)549,383,04094,328,640
Size523.9 MB 90.0 MB
Events in quadrant A3,013,434656,147
Events in quadrant B5,185,051622,948
Events in quadrant C6,688,181543,660
Events in quadrant D4,936,978573,424

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135091
B0198211
C0245881
D0191151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6602741.120872%
B660388713.433288%
C6602106916.192063%
D66023335.043926%

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 7687 6603 0 0 0.00% 0.00%
B 7688 6604 565 565 7.35% 8.56%
C 7687 6603 759 759 9.87% 11.49%
D 7687 6603 235 235 3.06% 3.56%

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 13 153 124899 690.72 737 718 179.8
A 4 3 15300 81.11 737 718 179.8
A 3 14 13547 71.36 737 718 179.8
B 4 206 2220221 15264.57 678 655 145.4
B 10 247 64854 441.51 678 655 145.4
B 8 234 51066 346.69 678 655 145.4
C 15 224 2003083 11220.05 656 650 178.5
C 12 254 1287514 7210.57 656 650 178.5
C 9 38 281694 1574.75 656 650 178.5
D 7 96 483068 2429.43 698 666 198.6
D 15 142 450470 2265.26 698 666 198.6
D 2 249 398810 2005.1 698 666 198.6

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