ASTROSAT CZTI

Data Quality Report

Orbit 56909

Creation date: 2026-04-05T08:51:46.117570
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_083T14_9000006564_56909cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56909cztM0_level2_quad_clean.evt
Size (bytes)493,974,72099,823,680
Size471.1 MB 95.2 MB
Events in quadrant A3,591,056666,482
Events in quadrant B5,280,925664,540
Events in quadrant C3,673,907626,602
Events in quadrant D5,174,328558,625

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161712
B0208162
C0162782
D0206432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72671361.871474%
B72676528.972066%
C72681401.926252%
D72685587.677490%

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 8892 7269 89 89 1.00% 1.22%
B 8892 7269 461 461 5.18% 6.34%
C 8893 7270 87 87 0.98% 1.20%
D 8893 7270 460 460 5.17% 6.33%

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 13 248 269868 1451.09 748 729 185.5
A 13 153 97795 523.34 748 729 185.5
A 8 6 86935 464.79 748 729 185.5
B 10 16 1322671 8614.13 710 685 153.5
B 5 172 678037 4413.66 710 685 153.5
B 5 185 219280 1424.38 710 685 153.5
C 13 3 507199 2529.9 729 721 200.2
C 1 16 134946 670.47 729 721 200.2
C 14 254 75248 372.27 729 721 200.2
D 8 240 710611 3616.08 701 669 196.3
D 2 249 669758 3408.0 701 669 196.3
D 11 129 441523 2245.49 701 669 196.3

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