ASTROSAT CZTI

Data Quality Report

Orbit 14916

Creation date: 2024-06-27T17:01:17.900112
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/AS1A04_099T01_9000002204_14916cztM0_level2.evt modeM0/AS1A04_099T01_9000002204_14916cztM0_level2_quad_clean.evt
Size (bytes)1,041,978,240169,729,920
Size993.7 MB 161.9 MB
Events in quadrant A6,446,4541,080,395
Events in quadrant B7,920,4231,069,782
Events in quadrant C7,655,0851,044,648
Events in quadrant D8,631,9901,022,810

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278924
B0324103
C0314103
D0349743

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133682031.518552%
B133684373.269001%
C133683412.550868%
D133685113.822561%

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 14809 13372 2 2 0.01% 0.01%
B 14809 13371 103 103 0.70% 0.77%
C 14809 13372 100 100 0.68% 0.75%
D 14809 13371 329 329 2.22% 2.46%

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 12 189 95588 280.66 1640 1604 334.9
A 12 96 30797 87.18 1640 1604 334.9
A 3 1 21189 58.49 1640 1604 334.9
B 10 16 1530928 4830.68 1623 1580 316.6
B 12 111 39629 120.18 1623 1580 316.6
B 11 111 34124 102.8 1623 1580 316.6
C 9 236 1075463 2914.07 1588 1597 368.5
C 3 233 384309 1038.54 1588 1597 368.5
C 13 61 11183 26.01 1588 1597 368.5
D 7 254 2313654 6184.83 1561 1523 373.8
D 7 223 162595 430.86 1561 1523 373.8
D 13 168 142397 376.83 1561 1523 373.8

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