ASTROSAT CZTI

Data Quality Report

Orbit 25025

Creation date: 2024-06-27T19:12:54.491097
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_134T03_9000003670_25025cztM0_level2.evt modeM0/AS1A07_134T03_9000003670_25025cztM0_level2_quad_clean.evt
Size (bytes)255,873,60036,541,440
Size244.0 MB 34.8 MB
Events in quadrant A1,442,258237,268
Events in quadrant B1,471,709243,139
Events in quadrant C2,790,796219,278
Events in quadrant D1,870,103223,664

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A058800
B060370
C0101800
D073880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2550491.921569%
B2550712.784314%
C255039015.294118%
D25501154.509804%

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 3810 2551 0 0 0.00% 0.00%
B 3810 2551 0 0 0.00% 0.00%
C 3810 2551 190 190 4.99% 7.45%
D 3810 2551 39 39 1.02% 1.53%

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 13 254 3322 39.18 374 368 75.4
A 3 137 3288 38.72 374 368 75.4
A 0 226 3160 37.03 374 368 75.4
B 12 111 8385 111.79 373 365 71.7
B 11 111 7706 102.33 373 365 71.7
B 14 111 6808 89.81 373 365 71.7
C 7 247 1339754 16128.96 352 355 83.0
C 14 238 55921 669.12 352 355 83.0
C 0 239 12064 141.0 352 355 83.0
D 8 195 295016 3377.64 359 349 87.2
D 7 238 143749 1643.73 359 349 87.2
D 1 52 41687 473.84 359 349 87.2

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