ASTROSAT CZTI

Data Quality Report

Orbit 39238

Creation date: 2024-06-27T22:02:09.882763
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/AS1A12_095T01_9000005450_39238cztM0_level2.fits modeM0/AS1A12_095T01_9000005450_39238cztM0_level2_quad_clean.evt
Size (bytes)430,508,16057,208,320
Size410.6 MB 54.6 MB
Events in quadrant A2,911,539421,033
Events in quadrant B2,106,656446,926
Events in quadrant C1,875,602433,422
Events in quadrant D8,733,938151,295

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112922
B090031
C081181
D0286301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A39553147.939317%
B3955952.402023%
C395520.050569%
D3955267867.711757%

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 5478 3956 203 203 3.71% 5.13%
B 5478 3956 64 64 1.17% 1.62%
C 5478 3956 0 0 0.00% 0.00%
D 5478 3956 2678 2678 48.89% 67.69%

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 13 248 973044 11114.83 428 419 87.5
A 10 83 267233 3049.06 428 419 87.5
A 10 255 14783 164.14 428 419 87.5
B 5 172 319138 3833.26 429 417 83.1
B 0 230 41959 499.63 429 417 83.1
B 5 255 41821 497.97 429 417 83.1
C 15 214 163296 1622.6 425 427 100.4
C 3 233 25067 245.48 425 427 100.4
C 9 187 14465 139.86 425 427 100.4
D 12 235 7376022 100919.8 294 286 73.1
D 13 249 84739 1155.54 294 286 73.1
D 12 227 65921 898.06 294 286 73.1

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