ASTROSAT CZTI

Data Quality Report

Orbit 42121

Creation date: 2024-06-27T22:37:11.877120
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_061T07_9000005752_42121cztM0_level2.fits modeM0/AS1A12_061T07_9000005752_42121cztM0_level2_quad_clean.evt
Size (bytes)102,692,16028,730,880
Size97.9 MB 27.4 MB
Events in quadrant A965,261190,640
Events in quadrant B912,489194,544
Events in quadrant C864,450187,746
Events in quadrant D923,901172,329

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A038681
B038211
C035421
D038872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A170140.235156%
B170180.470312%
C170110.058789%
D1700352.058824%

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 3284 1702 1 1 0.03% 0.06%
B 3284 1702 1 1 0.03% 0.06%
C 3284 1702 0 0 0.00% 0.00%
D 3283 1701 22 22 0.67% 1.29%

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 10 83 202882 4777.95 195 190 42.4
A 13 248 3513 78.33 195 190 42.4
A 3 137 2165 46.56 195 190 42.4
B 4 81 84305 2143.36 193 188 39.2
B 5 255 34135 864.99 193 188 39.2
B 3 112 23171 585.62 193 188 39.2
C 15 214 73934 1583.56 191 191 46.6
C 8 79 43032 919.97 191 191 46.6
C 12 249 1334 24.54 191 191 46.6
D 13 249 64124 1346.59 190 184 47.5
D 2 249 48124 1009.62 190 184 47.5
D 10 199 27913 583.98 190 184 47.5

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