ASTROSAT CZTI

Data Quality Report

Orbit 06774

Creation date: 2024-06-27T15:11:31.660957
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_086T02_9000000936_06774cztM0_level2.evt modeM0/AS1G06_086T02_9000000936_06774cztM0_level2_quad_clean.evt
Size (bytes)1,916,202,240279,109,440
Size1.8 GB 266.2 MB
Events in quadrant A11,361,5661,733,587
Events in quadrant B11,681,0881,759,253
Events in quadrant C12,338,3111,691,600
Events in quadrant D21,018,3611,602,599

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500176
B0507235
C0532465
D07935213

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04920
B04920
C04920
D04920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A242202671.102395%
B242203041.255161%
C242205792.390586%
D2421918747.737727%

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 45805 24226 9 9 0.02% 0.04%
B 45805 24226 15 15 0.03% 0.06%
C 45805 24226 327 327 0.71% 1.35%
D 45805 24225 1285 1285 2.81% 5.30%

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 8 15 159953 268.3 2881 2817 585.7
A 15 239 74354 122.14 2881 2817 585.7
A 0 226 28168 43.28 2881 2817 585.7
B 4 48 195622 349.12 2901 2825 552.2
B 4 81 129213 228.87 2901 2825 552.2
B 0 214 64679 112.01 2901 2825 552.2
C 9 247 1404603 2188.03 2776 2788 640.7
C 9 16 79106 119.12 2776 2788 640.7
C 13 61 21867 29.78 2776 2788 640.7
D 12 220 5654300 8550.15 2719 2634 661.0
D 2 33 1593420 2406.63 2719 2634 661.0
D 8 195 1389762 2098.52 2719 2634 661.0

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