ASTROSAT CZTI

Data Quality Report

Orbit 28496

Creation date: 2024-06-27T19:52:37.629668
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_123T03_9000004096_28496cztM0_level2.evt modeM0/AS1A10_123T03_9000004096_28496cztM0_level2_quad_clean.evt
Size (bytes)547,470,72076,953,600
Size522.1 MB 73.4 MB
Events in quadrant A3,079,637484,178
Events in quadrant B3,194,290493,409
Events in quadrant C3,106,194475,129
Events in quadrant D6,769,561434,363

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131031
B0133431
C0130111
D0242721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6344600.945776%
B6343881.387356%
C6343791.245467%
D6344114518.048550%

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 7269 6344 2 2 0.03% 0.03%
B 7268 6343 21 21 0.29% 0.33%
C 7268 6343 0 0 0.00% 0.00%
D 7269 6344 1127 1127 15.50% 17.76%

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 12 96 31747 194.79 789 773 159.0
A 13 254 10662 62.19 789 773 159.0
A 3 137 7652 43.26 789 773 159.0
B 14 207 94546 625.97 778 758 149.8
B 0 230 38636 252.81 778 758 149.8
B 12 111 18711 119.82 778 758 149.8
C 14 238 122349 682.47 758 762 178.2
C 3 233 23486 127.55 758 762 178.2
C 7 247 6520 32.32 758 762 178.2
D 1 52 2348694 13788.94 710 692 170.3
D 8 195 1015358 5958.75 710 692 170.3
D 12 233 576736 3382.89 710 692 170.3

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