ASTROSAT CZTI

Data Quality Report

Orbit 54085

Creation date: 2025-09-27T07:43:44.479716
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_041T01_9000006510_54085cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54085cztM0_level2_quad_clean.evt
Size (bytes)523,872,000114,166,080
Size499.6 MB 108.9 MB
Events in quadrant A4,297,237735,966
Events in quadrant B4,083,953811,507
Events in quadrant C4,207,506712,604
Events in quadrant D6,180,350639,720

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190141
B0181611
C0183971
D0241221

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80172813.505052%
B80171902.369964%
C80161501.871257%
D80174735.899963%

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 8227 8019 188 188 2.29% 2.34%
B 8227 8019 99 99 1.20% 1.23%
C 8226 8018 111 111 1.35% 1.38%
D 8227 8019 420 420 5.11% 5.24%

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 15 174 860749 4183.46 834 811 205.6
A 0 8 57752 277.01 834 811 205.6
A 3 14 46388 221.72 834 811 205.6
B 7 252 242472 1337.33 844 811 180.7
B 5 236 148109 815.13 844 811 180.7
B 0 213 136998 753.65 844 811 180.7
C 15 233 352401 1541.0 830 821 228.2
C 12 252 236552 1033.22 830 821 228.2
C 13 3 113262 492.84 830 821 228.2
D 8 176 1739535 7634.49 803 767 227.8
D 11 176 302820 1326.24 803 767 227.8
D 2 165 262571 1149.52 803 767 227.8

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