ASTROSAT CZTI

Data Quality Report

Orbit 20190520_A05_013T01_9000002944_level2

Creation date: 2025-11-30T09:33:01.542249
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/AS1A05_013T01_9000002944cztM0_level2.fits modeM0/AS1A05_013T01_9000002944cztM0_level2_quad_clean.evt
Size (bytes)1,968,405,1201,645,110,720
Size1.8 GB 1.5 GB
Events in quadrant A12,055,7369,470,270
Events in quadrant B11,695,8189,496,164
Events in quadrant C11,841,8568,926,620
Events in quadrant D10,206,8348,116,360

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041060
B041060
C041060
D041060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04198660
B04329850
C04552160
D04891990

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03090
B03100
C03110
D03110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20161427661.371929%
B20161435281.749878%
C20161348382.399647%
D20161367853.365358%

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 234119 201599 0 0 0.00% 0.00%
B 234119 201593 0 0 0.00% 0.00%
C 234119 201594 0 0 0.00% 0.00%
D 234118 201547 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 11734 11.36 3141 2946 773.5
A 7 110 9726 8.77 3141 2946 773.5
A 0 30 9245 8.14 3141 2946 773.5
B 2 9 9550 10.99 3088 2944 600.8
B 2 8 7960 8.35 3088 2944 600.8
B 5 225 7635 7.81 3088 2944 600.8
C 1 80 9054 7.69 3126 2921 797.6
C 1 81 8844 7.43 3126 2921 797.6
C 12 241 8339 6.79 3126 2921 797.6
D 3 14 7369 6.11 2921 2658 771.4
D 10 189 7284 6.0 2921 2658 771.4
D 6 231 7217 5.91 2921 2658 771.4

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