ASTROSAT CZTI

Data Quality Report

Orbit 08222

Creation date: 2024-06-27T15:29:37.329293
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/AS1C02_041T01_9000001136_08222cztM0_level2.evt modeM0/AS1C02_041T01_9000001136_08222cztM0_level2_quad_clean.evt
Size (bytes)740,260,800166,265,280
Size706.0 MB 158.6 MB
Events in quadrant A5,594,7301,101,118
Events in quadrant B5,676,4301,100,858
Events in quadrant C4,922,3171,074,007
Events in quadrant D5,524,6721,043,630

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02120
B02120
C02120
D02120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232303
B0233832
C0215532
D0232122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103412132.059762%
B103412782.688328%
C103411491.440866%
D103412132.059762%

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 12786 10341 8 8 0.06% 0.08%
B 12786 10341 63 63 0.49% 0.61%
C 12786 10342 1 1 0.01% 0.01%
D 12786 10342 57 57 0.45% 0.55%

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 15 79 517306 1964.99 1301 1278 262.6
A 5 16 57440 213.86 1301 1278 262.6
A 0 226 12421 42.43 1301 1278 262.6
B 0 245 156035 635.74 1289 1263 243.5
B 0 214 121530 494.01 1289 1263 243.5
B 0 213 119661 486.33 1289 1263 243.5
C 9 68 59254 203.39 1239 1245 285.2
C 1 16 24963 83.16 1239 1245 285.2
C 13 61 9498 28.94 1239 1245 285.2
D 13 105 417013 1345.65 1260 1224 309.0
D 1 52 170920 549.2 1260 1224 309.0
D 12 233 123130 394.53 1260 1224 309.0

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