ASTROSAT CZTI

Data Quality Report

Orbit 59085

Creation date: 2026-08-29T17:40:39.333670
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_004T02_9000006600_59085cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59085cztM0_level2_quad_clean.evt
Size (bytes)1,007,392,32074,381,760
Size960.7 MB 70.9 MB
Events in quadrant A3,587,033688,508
Events in quadrant B5,940,482676,315
Events in quadrant C9,779,207346,397
Events in quadrant D17,434,91347,681

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154580
B0223400
C0339400
D0566990

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7077490.692384%
B70776839.650982%
C7077345048.749470%
D7078657792.921729%

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 7077 7077 31 31 0.44% 0.44%
B 7077 7077 549 549 7.76% 7.76%
C 7077 7077 2104 2104 29.73% 29.73%
D 7078 7078 6292 6292 88.90% 88.90%

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 0 24 158587 800.8 793 773 197.1
A 10 251 103532 521.43 793 773 197.1
A 13 248 89836 451.93 793 773 197.1
B 10 128 1901815 11555.61 757 728 164.5
B 4 236 270234 1638.17 757 728 164.5
B 5 236 209837 1271.05 757 728 164.5
C 15 198 6995476 46488.28 547 543 150.5
C 3 233 261563 1734.74 547 543 150.5
C 6 223 241638 1602.32 547 543 150.5
D 12 1 11390416 194041.38 200 190 58.7
D 12 110 4762659 81132.37 200 190 58.7
D 6 239 191913 3266.15 200 190 58.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct