ASTROSAT CZTI

Data Quality Report

Orbit 23704

Creation date: 2024-06-27T18:57:42.586862
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_054T01_9000003504_23704cztM0_level2.evt modeM0/AS1A07_054T01_9000003504_23704cztM0_level2_quad_clean.evt
Size (bytes)504,627,840112,129,920
Size481.3 MB 106.9 MB
Events in quadrant A2,769,351780,359
Events in quadrant B5,543,030715,188
Events in quadrant C2,849,467750,311
Events in quadrant D3,710,685728,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123611
B0204971
C0124791
D0151862

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6035420.695940%
B6035101516.818558%
C6035841.391881%
D60351191.971831%

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 6970 6035 0 0 0.00% 0.00%
B 6970 6035 857 857 12.30% 14.20%
C 6970 6035 2 2 0.03% 0.03%
D 6970 6035 83 83 1.19% 1.38%

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 9056 58.37 718 703 143.1
A 3 137 6286 39.01 718 703 143.1
A 0 226 6150 38.06 718 703 143.1
B 14 207 2820029 22265.39 666 649 126.6
B 0 229 28253 218.0 666 649 126.6
B 15 33 24916 191.64 666 649 126.6
C 14 238 110647 677.79 693 697 162.2
C 0 207 17637 104.43 693 697 162.2
C 7 247 14821 87.07 693 697 162.2
D 1 52 809642 4762.9 697 678 169.8
D 9 85 112077 655.88 697 678 169.8
D 13 174 70257 409.66 697 678 169.8

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