ASTROSAT CZTI

Data Quality Report

Orbit 01019

Creation date: 2024-06-27T14:06:14.698299
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/AS1P01_998T02_9000000190_01019cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01019cztM0_level2_quad_clean.evt
Size (bytes)1,169,530,560123,966,720
Size1.1 GB 118.2 MB
Events in quadrant A8,563,779818,349
Events in quadrant B9,193,353821,096
Events in quadrant C9,251,533801,828
Events in quadrant D7,918,327796,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307391
B0325751
C0327232
D0288211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A743020.026918%
B7430140.188425%
C742960.080765%
D7429340.457666%

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 7820 7431 155 155 1.98% 2.09%
B 7820 7431 264 264 3.38% 3.55%
C 7819 7430 277 277 3.54% 3.73%
D 7819 7430 148 148 1.89% 1.99%

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 0 231 38507 67.83 2217 2231 534.8
A 11 79 11745 17.79 2217 2231 534.8
A 12 189 10574 15.6 2217 2231 534.8
B 0 220 145179 258.21 2333 2337 553.2
B 15 22 59875 104.01 2333 2337 553.2
B 8 234 46193 79.28 2333 2337 553.2
C 9 85 427992 710.38 2148 2226 599.3
C 15 241 375166 622.24 2148 2226 599.3
C 3 111 30376 46.97 2148 2226 599.3
D 1 83 185053 287.38 2045 2112 636.6
D 9 64 46070 69.05 2045 2112 636.6
D 9 49 24443 35.08 2045 2112 636.6

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