ASTROSAT CZTI

Data Quality Report

Orbit 24571

Creation date: 2024-06-27T19:07:24.494638
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/AS1T03_183T01_9000003610_24571cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24571cztM0_level2_quad_clean.evt
Size (bytes)642,735,360138,574,080
Size613.0 MB 132.2 MB
Events in quadrant A4,805,553925,147
Events in quadrant B3,892,098948,654
Events in quadrant C4,056,141891,444
Events in quadrant D6,154,882860,708

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197492
B0169662
C0171432
D0238602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82112873.495311%
B82111441.753745%
C82111662.021678%
D82113374.104250%

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 8951 8213 106 106 1.18% 1.29%
B 8951 8213 2 2 0.02% 0.02%
C 8951 8213 0 0 0.00% 0.00%
D 8951 8213 240 240 2.68% 2.92%

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 6 16 1067661 5458.01 968 946 195.4
A 13 254 12251 57.84 968 946 195.4
A 3 137 8685 39.6 968 946 195.4
B 3 64 32263 169.6 974 948 184.6
B 0 190 27426 143.4 974 948 184.6
B 12 111 22820 118.45 974 948 184.6
C 14 238 147080 669.35 937 941 218.3
C 7 247 103237 468.54 937 941 218.3
C 2 16 97043 440.17 937 941 218.3
D 8 195 2043534 9071.25 938 910 225.2
D 12 218 221967 981.71 938 910 225.2
D 7 238 151902 670.55 938 910 225.2

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