ASTROSAT CZTI

Data Quality Report

Orbit 54504

Creation date: 2025-10-25T14:06:13.547135
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_127T09_9000006520_54504cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54504cztM0_level2_quad_clean.evt
Size (bytes)468,336,960104,538,240
Size446.6 MB 99.7 MB
Events in quadrant A3,254,095695,157
Events in quadrant B4,174,252712,321
Events in quadrant C5,093,216634,573
Events in quadrant D4,249,466617,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151812
B0177152
C0202904
D0182092

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7271650.893962%
B72714255.845138%
C72704065.584594%
D72701111.526823%

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 8031 7272 1 1 0.01% 0.01%
B 8031 7272 215 215 2.68% 2.96%
C 8030 7271 329 329 4.10% 4.52%
D 8030 7271 96 96 1.20% 1.32%

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 4 3 59152 301.66 793 774 193.5
A 8 245 21803 108.66 793 774 193.5
A 0 8 16980 83.74 793 774 193.5
B 2 249 749632 4487.62 773 745 166.9
B 0 213 137830 821.47 773 745 166.9
B 5 185 126419 753.09 773 745 166.9
C 13 3 1036941 4972.23 758 753 208.4
C 4 5 584127 2799.37 758 753 208.4
C 13 65 179449 857.49 758 753 208.4
D 3 12 664843 3066.28 761 729 216.6
D 2 16 199802 919.14 761 729 216.6
D 8 160 132642 609.06 761 729 216.6

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