ASTROSAT CZTI

Data Quality Report

Orbit 20191109_A07_018T07_9000003294_level2

Creation date: 2025-12-05T18:04:37.596748
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_018T07_9000003294cztM0_level2.fits modeM0/AS1A07_018T07_9000003294cztM0_level2_quad_clean.evt
Size (bytes)752,544,000659,609,280
Size717.7 MB 629.1 MB
Events in quadrant A4,733,3383,964,607
Events in quadrant B4,550,6543,990,679
Events in quadrant C4,529,4263,694,072
Events in quadrant D3,800,0983,151,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01090
B01090
C01090
D01090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01573290
B01600330
C01641830
D02247470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015400
B015400
C015400
D015400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7544610581.402327%
B7544414051.862308%
C7544620172.673435%
D75447815010.802285%

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 98707 75446 0 0 0.00% 0.00%
B 98707 75446 0 0 0.00% 0.00%
C 98707 75446 0 0 0.00% 0.00%
D 98707 75259 0 0 0.00% 0.00%

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 29 4532 11.17 1231 1153 302.5
A 7 110 3742 8.56 1231 1153 302.5
A 9 19 3548 7.92 1231 1153 302.5
B 2 9 3639 10.62 1200 1147 234.6
B 2 8 3064 8.17 1200 1147 234.6
B 5 128 3004 7.92 1200 1147 234.6
C 12 241 3175 6.72 1195 1117 306.1
C 3 234 3070 6.38 1195 1117 306.1
C 12 249 3052 6.32 1195 1117 306.1
D 3 14 2813 6.32 1083 984 289.4
D 13 238 2636 5.71 1083 984 289.4
D 6 67 2613 5.63 1083 984 289.4

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