ASTROSAT CZTI

Data Quality Report

Orbit 20230328_A12_006T09_9000005546_level2

Creation date: 2023-03-29T11:31:37.034726
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/AS1A12_006T09_9000005546cztM0_level2.fits modeM0/AS1A12_006T09_9000005546cztM0_level2_quad_clean.evt
Size (bytes)132,082,560111,009,600
Size126.0 MB 105.9 MB
Events in quadrant A802,194636,288
Events in quadrant B760,862631,454
Events in quadrant C783,660605,301
Events in quadrant D583,288419,066

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0450

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0345900
B0356060
C0327050
D0505750

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15485260.167904%
B154851861.201162%
C15485500.322893%
D15485363423.467872%

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 19572 15484 0 0 0.00% 0.00%
B 19572 15483 0 0 0.00% 0.00%
C 19572 15484 0 0 0.00% 0.00%
D 19572 15425 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 9 19 709 9.28 209 196 55.3
A 7 110 679 8.73 209 196 55.3
A 0 29 667 8.52 209 196 55.3
B 2 9 700 11.95 201 191 42.5
B 3 80 562 8.71 201 191 42.5
B 2 8 540 8.19 201 191 42.5
C 1 81 671 8.52 207 193 56.1
C 1 80 632 7.82 207 193 56.1
C 3 203 624 7.68 207 193 56.1
D 7 5 444 5.7 169 154 50.8
D 1 3 441 5.64 169 154 50.8
D 7 3 433 5.49 169 154 50.8

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