ASTROSAT CZTI

Data Quality Report

Orbit 36290

Creation date: 2022-06-15T02:08:51.487341
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/AS1A10_071T33_9000005186_36290cztM0_level2.evt modeM0/AS1A10_071T33_9000005186_36290cztM0_level2_quad_clean.evt
Size (bytes)504,371,52061,983,360
Size481.0 MB 59.1 MB
Events in quadrant A2,602,842403,798
Events in quadrant B3,876,964404,168
Events in quadrant C3,295,191388,663
Events in quadrant D5,164,027331,952

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107173
B0147932
C0127542
D0188752

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496380.161193%
B49632454.936530%
C4963931.873867%
D496371614.426758%

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 7087 4964 1 1 0.01% 0.02%
B 7087 4964 173 173 2.44% 3.49%
C 7087 4964 90 90 1.27% 1.81%
D 7087 4964 714 714 10.07% 14.38%

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 176269 1434.68 612 603 122.4
A 15 223 30655 245.44 612 603 122.4
A 13 6 13507 105.39 612 603 122.4
B 4 171 424944 3701.62 604 588 114.6
B 5 236 399435 3479.11 604 588 114.6
B 0 155 239868 2087.22 604 588 114.6
C 0 207 493311 3574.94 593 599 137.8
C 0 10 276110 1999.01 593 599 137.8
C 15 214 209049 1512.44 593 599 137.8
D 12 6 1784180 13146.87 552 537 135.7
D 7 223 507598 3737.44 552 537 135.7
D 1 20 444179 3269.99 552 537 135.7

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