ASTROSAT CZTI

Data Quality Report

Orbit 56740

Creation date: 2026-03-24T22:20:36.746827
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_083T05_9000006560_56740cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56740cztM0_level2_quad_clean.evt
Size (bytes)439,859,52092,646,720
Size419.5 MB 88.4 MB
Events in quadrant A3,051,153619,401
Events in quadrant B4,012,171657,574
Events in quadrant C5,791,012523,271
Events in quadrant D2,931,706560,068

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138271
B0163191
C0218957
D0133311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63761241.944793%
B63762894.532622%
C637690014.115433%
D6376310.486198%

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 7475 6376 53 53 0.71% 0.83%
B 7476 6377 156 156 2.09% 2.45%
C 7476 6377 853 853 11.41% 13.38%
D 7476 6377 4 4 0.05% 0.06%

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 163420 947.21 697 680 171.8
A 3 62 147464 854.34 697 680 171.8
A 8 249 13057 72.04 697 680 171.8
B 4 206 578409 3899.99 685 658 148.1
B 5 185 408925 2755.92 685 658 148.1
B 0 213 165785 1114.66 685 658 148.1
C 15 230 1171410 6733.76 627 618 173.9
C 6 223 1047599 6021.66 627 618 173.9
C 15 208 535711 3077.56 627 618 173.9
D 5 173 53224 278.56 669 637 188.8
D 2 236 50997 266.76 669 637 188.8
D 2 252 36094 187.82 669 637 188.8

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