ASTROSAT CZTI

Data Quality Report

Orbit 20200118_C05_012T03_9000003442_level2

Creation date: 2025-12-08T07:17:31.134699
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/AS1C05_012T03_9000003442cztM0_level2.fits modeM0/AS1C05_012T03_9000003442cztM0_level2_quad_clean.evt
Size (bytes)755,524,800900,892,800
Size720.5 MB 859.2 MB
Events in quadrant A4,675,4905,772,862
Events in quadrant B4,449,1045,765,257
Events in quadrant C4,536,1785,505,078
Events in quadrant D3,883,5364,907,032

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01350
B01350
C01350
D01350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015820
B015820
C015820
D015820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01599540
B01618070
C01640130
D02212060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A778335460.701502%
B778337931.018848%
C7783410671.370866%
D7783447016.039777%

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 91069 77829 0 0 0.00% 0.00%
B 91069 77828 0 0 0.00% 0.00%
C 91069 77833 0 0 0.00% 0.00%
D 91069 77642 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 0 29 4335 10.62 1217 1144 300.6
A 7 110 3722 8.58 1217 1144 300.6
A 9 19 3476 7.76 1217 1144 300.6
B 2 9 3512 10.21 1177 1126 233.7
B 3 80 3004 8.04 1177 1126 233.7
B 5 128 2963 7.86 1177 1126 233.7
C 12 241 3178 6.79 1198 1128 301.9
C 3 126 3172 6.77 1198 1128 301.9
C 2 191 3034 6.31 1198 1128 301.9
D 3 14 2844 6.21 1109 1015 294.4
D 6 38 2731 5.83 1109 1015 294.4
D 15 46 2722 5.8 1109 1015 294.4

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