ASTROSAT CZTI

Data Quality Report

Orbit 20170715_A02_029T01_9000001386_level2

Creation date: 2025-11-15T11:42:05.375789
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/AS1A02_029T01_9000001386cztM0_level2.fits modeM0/AS1A02_029T01_9000001386cztM0_level2_quad_clean.evt
Size (bytes)418,930,560376,027,200
Size399.5 MB 358.6 MB
Events in quadrant A2,531,1462,177,532
Events in quadrant B2,474,9242,197,171
Events in quadrant C2,541,3062,130,475
Events in quadrant D2,182,1821,925,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0996640
B0934980
C0886920
D01000120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0830
B0830
C0830
D0820

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08800
B08760
C08780
D08760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A430477541.751574%
B430749532.212472%
C431115461.266498%
D4309112672.940289%

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 51484 43312 0 0 0.00% 0.00%
B 51484 43308 0 0 0.00% 0.00%
C 51484 43316 0 0 0.00% 0.00%
D 51484 43316 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 0 29 2402 10.7 659 616 166.9
A 7 110 2042 8.55 659 616 166.9
A 9 19 1873 7.53 659 616 166.9
B 2 9 2125 11.6 653 623 129.5
B 12 226 1741 8.64 653 623 129.5
B 3 17 1657 7.99 653 623 129.5
C 1 80 1861 7.0 671 623 176.9
C 12 241 1773 6.5 671 623 176.9
C 1 81 1765 6.46 671 623 176.9
D 3 14 1627 6.49 620 563 164.1
D 7 3 1576 6.17 620 563 164.1
D 6 231 1567 6.12 620 563 164.1

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