ASTROSAT CZTI

Data Quality Report

Orbit 20200530_A09_027T02_9000003696_level2

Creation date: 2025-12-11T07:05:07.508431
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/AS1A09_027T02_9000003696cztM0_level2.fits modeM0/AS1A09_027T02_9000003696cztM0_level2_quad_clean.evt
Size (bytes)724,144,320685,549,440
Size690.6 MB 653.8 MB
Events in quadrant A4,606,8624,354,931
Events in quadrant B4,147,8863,938,700
Events in quadrant C4,409,1024,090,603
Events in quadrant D3,667,2943,282,441

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01539900
B02054280
C01610870
D03019490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015120
B015120
C015120
D015120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A742945640.759146%
B7429470099.434140%
C7429412891.734999%
D74294872311.741190%

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 86359 74293 0 0 0.00% 0.00%
B 86359 74167 0 0 0.00% 0.00%
C 86359 74291 0 0 0.00% 0.00%
D 86359 74225 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 4596 11.91 1199 1132 290.8
A 0 30 3618 8.55 1199 1132 290.8
A 7 110 3615 8.54 1199 1132 290.8
B 2 9 3331 10.79 1099 1054 211.0
B 2 8 2724 7.91 1099 1054 211.0
B 14 254 2708 7.84 1099 1054 211.0
C 12 241 3052 6.71 1165 1099 290.9
C 3 126 3037 6.66 1165 1099 290.9
C 12 250 2959 6.39 1165 1099 290.9
D 10 189 2697 6.29 1049 960 276.3
D 4 160 2590 5.9 1049 960 276.3
D 15 46 2553 5.77 1049 960 276.3

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