ASTROSAT CZTI

Data Quality Report

Orbit 17298

Creation date: 2024-06-27T17:34:42.230559
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/AS1A05_010T02_9000002556_17298cztM0_level2.evt modeM0/AS1A05_010T02_9000002556_17298cztM0_level2_quad_clean.evt
Size (bytes)494,988,48098,222,400
Size472.1 MB 93.7 MB
Events in quadrant A3,342,850647,111
Events in quadrant B3,252,535659,352
Events in quadrant C3,174,932610,121
Events in quadrant D4,773,495599,151

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143492
B0139122
C0137092
D0186792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65801001.519757%
B6580761.155015%
C6580661.003040%
D65805368.145897%

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 6581 32 32 0.41% 0.49%
B 7820 6581 2 2 0.03% 0.03%
C 7820 6581 0 0 0.00% 0.00%
D 7820 6581 385 385 4.92% 5.85%

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 4 2 168362 1019.33 818 803 164.4
A 14 235 32283 191.51 818 803 164.4
A 0 226 7278 39.39 818 803 164.4
B 0 230 22171 136.63 821 803 156.4
B 12 111 18354 112.23 821 803 156.4
B 11 111 15799 95.89 821 803 156.4
C 14 238 119848 659.49 774 778 180.5
C 3 233 31149 168.22 774 778 180.5
C 13 61 5557 26.47 774 778 180.5
D 13 189 1234480 6797.69 752 732 181.5
D 13 232 170741 936.71 752 732 181.5
D 11 176 139966 767.15 752 732 181.5

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