ASTROSAT CZTI

Data Quality Report

Orbit 30870

Creation date: 2024-06-27T20:20:35.056367
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_071T49_9000004462_30870cztM0_level2.evt modeM0/AS1A10_071T49_9000004462_30870cztM0_level2_quad_clean.evt
Size (bytes)658,080,00084,381,120
Size627.6 MB 80.5 MB
Events in quadrant A3,498,475540,953
Events in quadrant B8,834,063522,260
Events in quadrant C3,518,833525,232
Events in quadrant D3,648,762522,307

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146201
B0305531
C0146301
D0150921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63621592.499214%
B6362114818.044640%
C63621412.216284%
D6363350.550055%

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 7332 6362 120 120 1.64% 1.89%
B 7332 6362 340 340 4.64% 5.34%
C 7332 6362 40 40 0.55% 0.63%
D 7333 6364 17 17 0.23% 0.27%

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 13 528628 3419.3 768 754 154.4
A 13 254 12112 73.57 768 754 154.4
A 3 137 7705 45.03 768 754 154.4
B 6 36 3912796 27302.88 745 727 143.3
B 6 159 1798840 12549.28 745 727 143.3
B 5 172 77455 535.5 745 727 143.3
C 0 10 365389 2088.4 739 742 174.6
C 14 238 119610 680.78 739 742 174.6
C 3 233 73047 414.1 739 742 174.6
D 8 195 633543 3540.26 749 732 178.7
D 2 250 74216 411.11 749 732 178.7
D 2 120 36219 198.53 749 732 178.7

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