ASTROSAT CZTI

Data Quality Report

Orbit 17761

Creation date: 2024-06-27T17:40:36.773504
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/AS1T03_070T08_9000002646_17761cztM0_level2.evt modeM0/AS1T03_070T08_9000002646_17761cztM0_level2_quad_clean.evt
Size (bytes)79,718,40020,911,680
Size76.0 MB 19.9 MB
Events in quadrant A730,731137,243
Events in quadrant B541,998150,459
Events in quadrant C528,341139,884
Events in quadrant D548,827134,771

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027531
B021711
C021081
D022111

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89611312.611607%
B897283.121516%
C897475.239688%
D897161.783724%

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 2266 897 94 94 4.15% 10.48%
B 2267 898 0 0 0.00% 0.00%
C 2267 898 0 0 0.00% 0.00%
D 2267 898 4 4 0.18% 0.45%

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 15 174 241602 8941.03 126 123 27.0
A 15 191 2728 96.45 126 123 27.0
A 8 205 1122 36.99 126 123 27.0
B 0 219 9202 333.99 134 131 27.2
B 10 245 3644 129.35 134 131 27.2
B 12 111 2848 100.04 134 131 27.2
C 14 238 19858 625.77 128 129 31.5
C 5 218 3644 111.49 128 129 31.5
C 3 233 2402 72.1 128 129 31.5
D 2 165 22297 674.57 128 124 32.9
D 1 52 14608 440.64 128 124 32.9
D 2 152 14220 428.84 128 124 32.9

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