ASTROSAT CZTI

Data Quality Report

Orbit 00178

Creation date: 2024-06-27T13:57:28.194550
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/AS1P01_134T04_9000000012_00178cztM0_level2.evt modeM0/AS1P01_134T04_9000000012_00178cztM0_level2_quad_clean.evt
Size (bytes)693,429,12052,128,000
Size661.3 MB 49.7 MB
Events in quadrant A5,281,869310,441
Events in quadrant B5,261,738315,976
Events in quadrant C4,944,739315,138
Events in quadrant D5,197,821306,374

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01611
B01511
C01610
D01610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011418
B011416
C011418
D011412

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238814836
B0239374962
C0221924110
D0260497251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A469240.085251%
B467650.106929%
C4726310.655946%
D46611022.188372%

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 7191 4850 102 102 1.42% 2.10%
B 7191 4841 68 68 0.95% 1.40%
C 7191 4888 113 113 1.57% 2.31%
D 7191 4814 209 209 2.91% 4.34%

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 7 128 50539 171.4 1311 1304 287.3
A 14 10 46590 157.65 1311 1304 287.3
A 13 66 27284 90.44 1311 1304 287.3
B 10 199 200965 646.85 1308 1315 308.7
B 5 85 14371 42.3 1308 1315 308.7
B 5 216 11709 33.68 1308 1315 308.7
C 0 202 142472 428.51 1179 1221 329.6
C 9 201 61449 182.71 1179 1221 329.6
C 10 17 25512 73.69 1179 1221 329.6
D 2 121 215740 609.99 1145 1181 351.7
D 13 89 173089 488.73 1145 1181 351.7
D 2 63 145600 410.58 1145 1181 351.7

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