ASTROSAT CZTI

Data Quality Report

Orbit 33799

Creation date: 2024-06-27T20:52:54.600712
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/AS1T04_091T01_9000004822_33799cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33799cztM0_level2_quad_clean.evt
Size (bytes)627,647,04050,616,000
Size598.6 MB 48.3 MB
Events in quadrant A5,564,829282,562
Events in quadrant B3,784,444298,092
Events in quadrant C3,517,482301,273
Events in quadrant D5,788,328283,208

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200683
B0148122
C0141922
D0209322

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5241109120.816638%
B52412194.178592%
C52411222.327800%
D52412785.304331%

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 7305 5242 831 831 11.38% 15.85%
B 7305 5242 149 149 2.04% 2.84%
C 7305 5242 101 101 1.38% 1.93%
D 7305 5242 225 225 3.08% 4.29%

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 15 237 3006254 23460.04 641 629 128.1
A 7 16 43687 336.08 641 629 128.1
A 13 6 25204 191.81 641 629 128.1
B 5 172 643243 5026.61 685 670 127.8
B 0 190 68068 527.23 685 670 127.8
B 15 85 67752 524.76 685 670 127.8
C 15 214 226013 1467.45 676 684 153.6
C 3 233 207578 1347.39 676 684 153.6
C 9 187 188424 1222.65 676 684 153.6
D 8 195 1939138 11723.61 678 661 165.3
D 2 250 381350 2302.35 678 661 165.3
D 1 47 334593 2019.57 678 661 165.3

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