ASTROSAT CZTI

Data Quality Report

Orbit 20240621_C09_005T01_9000006304_level2

Creation date: 2024-06-28T10:21:35.791100
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/AS1C09_005T01_9000006304cztM0_level2.fits modeM0/AS1C09_005T01_9000006304cztM0_level2_quad_clean.evt
Size (bytes)1,767,663,3602,648,606,400
Size1.6 GB 2.5 GB
Events in quadrant A10,108,35216,832,506
Events in quadrant B10,144,74617,559,948
Events in quadrant C10,633,36417,156,986
Events in quadrant D8,836,30814,878,892

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038940
B038940
C038940
D038940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08251370
B04600480
C04202860
D05419110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02450
B02450
C02450
D02450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202053142297.042212%
B20206958762.907918%
C20207916760.829379%
D202065119895.933239%

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 230411 202081 0 0 0.00% 0.00%
B 230411 202013 0 0 0.00% 0.00%
C 230411 202096 0 0 0.00% 0.00%
D 230411 201658 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 8353 8.81 2637 2461 668.4
A 14 95 7768 7.94 2637 2461 668.4
A 0 29 7729 7.88 2637 2461 668.4
B 2 9 9810 13.73 2681 2548 528.8
B 2 8 7899 10.12 2681 2548 528.8
B 3 17 7365 9.11 2681 2548 528.8
C 3 202 8114 7.61 2810 2618 721.8
C 1 81 8074 7.56 2810 2618 721.8
C 3 203 7777 7.15 2810 2618 721.8
D 10 189 6714 6.37 2538 2302 692.2
D 3 14 6527 6.1 2538 2302 692.2
D 15 47 6476 6.03 2538 2302 692.2

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