ASTROSAT CZTI

Data Quality Report

Orbit 57100

Creation date: 2026-04-18T04:14:10.616517
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_083T10_9000006566_57100cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57100cztM0_level2_quad_clean.evt
Size (bytes)513,264,96094,167,360
Size489.5 MB 89.8 MB
Events in quadrant A3,352,506631,632
Events in quadrant B4,536,742642,097
Events in quadrant C3,163,132602,450
Events in quadrant D7,433,942514,111

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145022
B0180742
C0144012
D0265122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66121121.693890%
B66124787.229280%
C6611600.907578%
D661178211.828770%

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 7637 6613 45 45 0.59% 0.68%
B 7637 6613 256 256 3.35% 3.87%
C 7636 6612 44 44 0.58% 0.67%
D 7636 6612 958 958 12.55% 14.49%

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 10 251 211339 1204.59 708 689 174.9
A 5 113 120296 683.97 708 689 174.9
A 4 13 107414 610.3 708 689 174.9
B 10 16 1109692 7682.6 677 651 144.4
B 4 171 360752 2494.51 677 651 144.4
B 0 197 144588 997.09 677 651 144.4
C 6 223 132140 699.76 687 681 187.9
C 14 254 96303 509.0 687 681 187.9
C 9 237 53388 280.56 687 681 187.9
D 15 142 3395598 18146.58 655 624 187.1
D 12 33 947311 5060.16 655 624 187.1
D 7 96 151817 808.15 655 624 187.1

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