ASTROSAT CZTI

Data Quality Report

Orbit 37743

Creation date: 2024-06-27T21:43:52.348981
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/AS1A11_106T02_9000005344_37743cztM0_level2.evt modeM0/AS1A11_106T02_9000005344_37743cztM0_level2_quad_clean.evt
Size (bytes)458,458,56095,336,640
Size437.2 MB 90.9 MB
Events in quadrant A3,409,727610,700
Events in quadrant B3,154,007616,017
Events in quadrant C3,083,420626,118
Events in quadrant D3,810,942596,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142703
B0137752
C0131262
D0158172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282671.066539%
B6282470.748169%
C6282430.684495%
D62821662.642471%

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 9056 6284 58 58 0.64% 0.92%
B 9056 6284 27 27 0.30% 0.43%
C 9056 6284 35 35 0.39% 0.56%
D 9056 6283 130 130 1.44% 2.07%

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 10 83 363970 2564.82 696 683 141.6
A 7 16 296749 2090.24 696 683 141.6
A 13 6 20618 140.74 696 683 141.6
B 5 255 112697 839.66 691 671 133.4
B 0 189 102029 759.7 691 671 133.4
B 4 81 80322 597.0 691 671 133.4
C 15 214 265499 1659.26 681 687 159.6
C 0 10 133740 833.68 681 687 159.6
C 1 23 14984 89.58 681 687 159.6
D 2 249 634747 3856.31 678 659 164.4
D 2 153 177033 1072.65 678 659 164.4
D 5 222 114471 692.17 678 659 164.4

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