ASTROSAT CZTI

Data Quality Report

Orbit 24355

Creation date: 2024-06-27T19:05:06.657348
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_145T01_9000003594_24355cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24355cztM0_level2_quad_clean.evt
Size (bytes)1,585,563,840213,641,280
Size1.5 GB 203.7 MB
Events in quadrant A8,637,1111,337,166
Events in quadrant B8,865,6551,364,167
Events in quadrant C10,332,9841,315,062
Events in quadrant D18,940,9111,184,613

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376053
B0379783
C0421013
D0683343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184172121.151110%
B184182511.362797%
C184173972.155617%
D18417363319.726340%

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 20367 18420 0 0 0.00% 0.00%
B 20368 18421 16 16 0.08% 0.09%
C 20367 18420 13 13 0.06% 0.07%
D 20367 18420 3378 3378 16.59% 18.34%

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 27202 55.67 2241 2192 449.3
A 3 137 20666 41.12 2241 2192 449.3
A 0 226 19319 38.12 2241 2192 449.3
B 12 111 53761 119.12 2232 2176 433.1
B 11 111 47891 105.56 2232 2176 433.1
B 5 172 44893 98.64 2232 2176 433.1
C 7 247 972004 1943.74 2145 2158 499.0
C 2 16 646213 1290.8 2145 2158 499.0
C 14 238 339940 676.97 2145 2158 499.0
D 1 52 5845008 12447.96 1930 1870 469.4
D 7 238 3908747 8323.03 1930 1870 469.4
D 9 35 922690 1961.67 1930 1870 469.4

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