ASTROSAT CZTI

Data Quality Report

Orbit 13657

Creation date: 2024-06-27T16:44:10.063432
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/AS1G08_075T01_9000002024_13657cztM0_level2.evt modeM0/AS1G08_075T01_9000002024_13657cztM0_level2_quad_clean.evt
Size (bytes)930,744,000171,023,040
Size887.6 MB 163.1 MB
Events in quadrant A6,237,6401,054,463
Events in quadrant B7,218,8921,038,234
Events in quadrant C6,432,9061,116,499
Events in quadrant D7,415,7861,069,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270994
B0300783
C0269093
D0307673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130391180.904977%
B130393222.469515%
C130391050.805276%
D130392181.671907%

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 14775 13043 3 3 0.02% 0.02%
B 14775 13043 52 52 0.35% 0.40%
C 14775 13043 1 1 0.01% 0.01%
D 14775 13043 74 74 0.50% 0.57%

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 11 29 43884 131.03 1581 1545 323.1
A 12 96 33588 99.17 1581 1545 323.1
A 9 143 28609 83.76 1581 1545 323.1
B 0 219 639113 2143.95 1566 1526 297.4
B 3 64 164836 549.15 1566 1526 297.4
B 0 189 79912 263.58 1566 1526 297.4
C 3 233 333898 915.72 1559 1569 362.9
C 14 234 20936 53.36 1559 1569 362.9
C 13 61 11161 26.43 1559 1569 362.9
D 8 195 391266 1036.07 1555 1508 376.2
D 13 122 266919 705.53 1555 1508 376.2
D 1 52 246111 650.21 1555 1508 376.2

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