ASTROSAT CZTI

Data Quality Report

Orbit 20170122_G06_029T02_9000000974_level2

Creation date: 2025-11-09T05:31:31.595016
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/AS1G06_029T02_9000000974cztM0_level2.fits modeM0/AS1G06_029T02_9000000974cztM0_level2_quad_clean.evt
Size (bytes)801,748,800773,994,240
Size764.6 MB 738.1 MB
Events in quadrant A4,796,6924,539,952
Events in quadrant B4,676,6724,581,105
Events in quadrant C4,746,5124,365,196
Events in quadrant D4,045,6603,940,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017860
B017860
C017860
D017860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01824820
B01853390
C01850050
D02263700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8773213561.545616%
B8773211691.332467%
C8773211791.343865%
D8773235574.054393%

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 100972 87720 0 0 0.00% 0.00%
B 100972 87715 0 0 0.00% 0.00%
C 100972 87701 0 0 0.00% 0.00%
D 100972 87681 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 4673 10.97 1246 1155 320.6
A 7 110 3899 8.56 1246 1155 320.6
A 0 30 3656 7.8 1246 1155 320.6
B 2 9 4022 11.59 1230 1166 246.4
B 5 128 3168 8.12 1230 1166 246.4
B 3 17 3159 8.09 1230 1166 246.4
C 1 80 3425 6.8 1253 1157 333.6
C 1 81 3327 6.5 1253 1157 333.6
C 12 241 3286 6.38 1253 1157 333.6
D 3 14 3077 6.55 1152 1044 310.4
D 6 231 2914 6.02 1152 1044 310.4
D 1 19 2890 5.95 1152 1044 310.4

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