ASTROSAT CZTI

Data Quality Report

Orbit 22061

Creation date: 2024-06-27T18:36:03.384110
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/AS1A07_149T01_9000003266_22061cztM0_level2.evt modeM0/AS1A07_149T01_9000003266_22061cztM0_level2_quad_clean.evt
Size (bytes)481,754,880107,637,120
Size459.4 MB 102.7 MB
Events in quadrant A3,401,171713,101
Events in quadrant B3,535,288715,215
Events in quadrant C3,385,363682,389
Events in quadrant D3,807,534676,611

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143492
B0147662
C0143462
D0157372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67871201.768086%
B67871722.534257%
C67871562.298512%
D67871061.561809%

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 7891 6786 0 0 0.00% 0.00%
B 7891 6786 20 20 0.25% 0.29%
C 7891 6786 0 0 0.00% 0.00%
D 7891 6786 20 20 0.25% 0.29%

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 13 254 10684 56.07 882 864 175.1
A 0 226 7613 38.53 882 864 175.1
A 3 137 7096 35.58 882 864 175.1
B 3 64 71020 436.65 872 852 160.7
B 0 197 21914 131.07 872 852 160.7
B 0 190 21645 129.39 872 852 160.7
C 14 238 135689 709.92 832 837 190.0
C 13 61 5863 26.46 832 837 190.0
C 0 10 2751 10.08 832 837 190.0
D 1 52 362238 1768.83 853 828 204.3
D 13 172 89888 435.88 853 828 204.3
D 7 223 74267 359.43 853 828 204.3

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