ASTROSAT CZTI

Data Quality Report

Orbit 28761

Creation date: 2024-06-27T19:55:57.573165
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/AS1A10_093T01_9000004128_28761cztM0_level2.evt modeM0/AS1A10_093T01_9000004128_28761cztM0_level2_quad_clean.evt
Size (bytes)567,904,32072,429,120
Size541.6 MB 69.1 MB
Events in quadrant A3,421,827459,744
Events in quadrant B4,155,077468,594
Events in quadrant C4,015,019426,194
Events in quadrant D5,178,275396,416

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139492
B0163982
C0163122
D0196542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6337390.615433%
B63372183.440114%
C63371382.177687%
D63373305.207511%

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 7702 6337 2 2 0.03% 0.03%
B 7702 6337 117 117 1.52% 1.85%
C 7702 6337 5 5 0.06% 0.08%
D 7702 6337 282 282 3.66% 4.45%

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 14 239 14968 81.63 882 869 172.7
A 13 254 10903 58.09 882 869 172.7
A 0 226 7694 39.51 882 869 172.7
B 5 255 501873 3104.36 874 857 161.4
B 4 80 211104 1302.72 874 857 161.4
B 12 111 18780 111.05 874 857 161.4
C 3 233 578784 3054.23 828 834 189.2
C 14 238 139175 731.08 828 834 189.2
C 4 254 48667 252.78 828 834 189.2
D 1 52 984363 5103.75 817 798 192.7
D 8 195 981306 5087.88 817 798 192.7
D 12 233 50345 257.1 817 798 192.7

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