ASTROSAT CZTI

Data Quality Report

Orbit 12346

Creation date: 2024-06-27T16:25:50.963611
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/AS1A04_210T01_9000001824_12346cztM0_level2.evt modeM0/AS1A04_210T01_9000001824_12346cztM0_level2_quad_clean.evt
Size (bytes)160,470,7205,247,360
Size153.0 MB 5.0 MB
Events in quadrant A1,063,6499,742
Events in quadrant B1,293,17110,139
Events in quadrant C847,97510,607
Events in quadrant D1,544,0019,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043342
B048241
C034291
D056641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1602623.870162%
B160219111.922597%
C1602251.560549%
D16021418.801498%

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 2903 1604 0 0 0.00% 0.00%
B 2903 1604 108 108 3.72% 6.73%
C 2903 1604 0 0 0.00% 0.00%
D 2903 1604 105 105 3.62% 6.55%

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 8 15 61533 1313.52 222 219 46.7
A 1 162 48861 1042.05 222 219 46.7
A 1 178 27152 576.98 222 219 46.7
B 15 201 287601 6750.62 219 214 42.6
B 4 239 143959 3376.52 219 214 42.6
B 12 111 4553 101.92 219 214 42.6
C 13 61 1636 27.62 217 219 51.3
C 12 4 519 5.85 217 219 51.3
C 3 202 518 5.83 217 219 51.3
D 1 52 433240 8530.88 204 198 50.8
D 13 170 221624 4362.07 204 198 50.8
D 9 85 69855 1372.23 204 198 50.8

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