ASTROSAT CZTI

Data Quality Report

Orbit 20220330_C07_004T01_9000005042_level2

Creation date: 2026-01-02T10:09:24.957254
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/AS1C07_004T01_9000005042cztM0_level2.fits modeM0/AS1C07_004T01_9000005042cztM0_level2_quad_clean.evt
Size (bytes)182,298,240152,176,320
Size173.9 MB 145.1 MB
Events in quadrant A1,160,566930,900
Events in quadrant B989,230734,328
Events in quadrant C1,123,174892,622
Events in quadrant D888,792693,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0421960
B0787930
C0432630
D0857240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19683970.492811%
B19683427921.739572%
C196832281.158360%
D19683340117.278870%

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 26075 19682 0 0 0.00% 0.00%
B 26075 19572 0 0 0.00% 0.00%
C 26075 19676 0 0 0.00% 0.00%
D 26075 19651 0 0 0.00% 0.00%

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 7 110 965 9.1 302 286 74.6
A 0 29 936 8.71 302 286 74.6
A 9 19 911 8.37 302 286 74.6
B 2 9 904 12.11 262 250 54.0
B 2 8 760 9.44 262 250 54.0
B 3 80 754 9.33 262 250 54.0
C 1 80 877 7.71 297 279 77.5
C 1 81 873 7.66 297 279 77.5
C 3 187 781 6.47 297 279 77.5
D 7 3 677 6.38 254 233 69.6
D 6 67 642 5.88 254 233 69.6
D 4 160 638 5.82 254 233 69.6

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