ASTROSAT CZTI

Data Quality Report

Orbit 30285

Creation date: 2024-06-27T20:13:07.465428
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/AS1A10_007T01_9000004350_30285cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30285cztM0_level2_quad_clean.evt
Size (bytes)720,037,44094,256,640
Size686.7 MB 89.9 MB
Events in quadrant A3,463,852613,910
Events in quadrant B5,247,199625,562
Events in quadrant C4,036,186609,107
Events in quadrant D8,590,095521,628

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146631
B0209197
C0163021
D0302075

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6947971.396286%
B69451001.439885%
C69472153.094861%
D6946191227.526634%

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 7512 6948 17 17 0.23% 0.24%
B 7512 6948 0 0 0.00% 0.00%
C 7512 6948 8 8 0.11% 0.12%
D 7513 6949 1666 1666 22.17% 23.97%

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 13 167291 969.18 852 834 171.7
A 13 254 12147 65.87 852 834 171.7
A 8 192 10622 56.99 852 834 171.7
B 6 159 1939067 11862.61 841 818 163.4
B 12 111 19950 117.09 841 818 163.4
B 11 111 18834 110.26 841 818 163.4
C 3 233 604941 3112.58 823 828 194.1
C 14 238 163188 836.53 823 828 194.1
C 14 254 43741 221.1 823 828 194.1
D 1 52 3882210 22490.66 717 700 172.6
D 2 250 1803603 10446.57 717 700 172.6
D 13 104 135466 780.88 717 700 172.6

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