ASTROSAT CZTI

Data Quality Report

Orbit 43492

Creation date: 2024-06-27T22:52:37.287220
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_018T01_9000005874_43492cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43492cztM0_level2_quad_clean.evt
Size (bytes)403,162,56087,606,720
Size384.5 MB 83.5 MB
Events in quadrant A3,981,819584,184
Events in quadrant B2,518,965602,466
Events in quadrant C2,566,458580,338
Events in quadrant D5,426,354498,091

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154332
B0115572
C0113442
D0200202

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5533540.975962%
B5533100.180734%
C553370.126514%
D55334989.000542%

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 7235 5534 29 29 0.40% 0.52%
B 7235 5534 2 2 0.03% 0.04%
C 7235 5534 4 4 0.06% 0.07%
D 7235 5534 485 485 6.70% 8.76%

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 15 237 1091779 9192.73 576 564 118.7
A 10 83 618328 5204.23 576 564 118.7
A 15 222 22445 184.33 576 564 118.7
B 0 189 120985 1072.81 578 563 112.2
B 0 245 58670 517.66 578 563 112.2
B 0 186 39836 349.87 578 563 112.2
C 15 214 227602 1709.98 567 571 132.8
C 3 233 68967 515.15 567 571 132.8
C 14 254 57372 427.82 567 571 132.8
D 2 16 1065354 7998.63 542 526 133.1
D 1 52 1039173 7801.97 542 526 133.1
D 13 249 422548 3170.09 542 526 133.1

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