ASTROSAT CZTI

Data Quality Report

Orbit 20160809_G05_235T01_9000000590_level2

Creation date: 2026-03-09T17:20:34.856469
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/AS1G05_235T01_9000000590cztM0_level2.fits modeM0/AS1G05_235T01_9000000590cztM0_level2_quad_clean.evt
Size (bytes)1,344,913,9201,398,424,320
Size1.3 GB 1.3 GB
Events in quadrant A8,072,1008,586,581
Events in quadrant B7,821,8308,581,104
Events in quadrant C7,894,2067,828,753
Events in quadrant D6,545,6846,971,648

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030860
B030880
C030920
D030900

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03153650
B03314900
C03564920
D05013690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15159724831.637895%
B15158529051.916417%
C15159272904.808961%
D1514751719611.352368%

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 175560 151719 0 0 0.00% 0.00%
B 175560 151707 0 0 0.00% 0.00%
C 175560 151683 0 0 0.00% 0.00%
D 175560 151484 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 7933 11.1 2097 1951 538.8
A 7 110 6869 9.13 2097 1951 538.8
A 0 30 6324 8.12 2097 1951 538.8
B 2 9 6833 11.78 2067 1967 413.2
B 12 226 5612 8.82 2067 1967 413.2
B 14 254 5387 8.28 2067 1967 413.2
C 1 80 5628 6.7 2084 1925 552.6
C 12 241 5519 6.5 2084 1925 552.6
C 1 81 5495 6.46 2084 1925 552.6
D 11 82 5430 7.45 1864 1688 502.1
D 4 160 4901 6.4 1864 1688 502.1
D 6 231 4861 6.32 1864 1688 502.1

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