ASTROSAT CZTI

Data Quality Report

Orbit 54404

Creation date: 2025-10-18T18:56:53.937308
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_126T19_9000006518_54404cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54404cztM0_level2_quad_clean.evt
Size (bytes)875,255,04086,659,200
Size834.7 MB 82.6 MB
Events in quadrant A3,374,039691,683
Events in quadrant B4,239,605730,478
Events in quadrant C8,580,648487,564
Events in quadrant D15,630,466198,450

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157240
B0177840
C0307710
D0514890

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7405771.039838%
B74051732.336259%
C7405202527.346388%
D7405518269.979743%

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 7404 7404 61 61 0.82% 0.82%
B 7405 7405 143 143 1.93% 1.93%
C 7405 7405 1968 1968 26.58% 26.58%
D 7404 7404 4974 4974 67.18% 67.18%

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 5 243 142096 732.8 781 760 192.9
A 12 15 101934 524.57 781 760 192.9
A 4 3 36577 185.7 781 760 192.9
B 10 14 449405 2728.74 764 735 164.4
B 7 0 345300 2095.59 764 735 164.4
B 0 213 193614 1173.06 764 735 164.4
C 1 241 5435703 30562.74 653 647 177.8
C 13 3 167503 938.27 653 647 177.8
C 5 10 105365 588.86 653 647 177.8
D 8 176 12946620 107026.22 419 400 121.0
D 7 70 399502 3299.37 419 400 121.0
D 2 172 248922 2054.53 419 400 121.0

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