ASTROSAT CZTI

Data Quality Report

Orbit 19977

Creation date: 2024-06-27T18:09:27.273046
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/AS1A05_082T09_9000002978_19977cztM0_level2.evt modeM0/AS1A05_082T09_9000002978_19977cztM0_level2_quad_clean.evt
Size (bytes)343,195,20038,871,360
Size327.3 MB 37.1 MB
Events in quadrant A5,039,240146,983
Events in quadrant B1,593,486285,039
Events in quadrant C1,970,512264,548
Events in quadrant D1,586,872266,977

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170234
B065041
C077641
D066051

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2984170957.272118%
B2984481.608579%
C29841264.222520%
D2984311.038874%

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 3963 2983 1339 1339 33.79% 44.89%
B 3964 2984 0 0 0.00% 0.00%
C 3964 2984 1 1 0.03% 0.03%
D 3964 2984 7 7 0.18% 0.23%

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 14 238 4024833 75194.92 258 253 53.5
A 14 254 12205 223.31 258 253 53.5
A 11 29 7979 144.35 258 253 53.5
B 12 111 9321 112.43 403 393 79.4
B 11 111 8163 97.84 403 393 79.4
B 14 111 7230 86.09 403 393 79.4
C 9 221 296544 3246.38 383 385 91.2
C 3 233 117744 1286.45 383 385 91.2
C 14 238 59156 644.23 383 385 91.2
D 1 52 42293 420.65 401 390 99.6
D 12 218 30702 304.3 401 390 99.6
D 2 234 10697 103.47 401 390 99.6

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