ASTROSAT CZTI

Data Quality Report

Orbit 18497

Creation date: 2024-06-27T17:50:36.413964
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_075T08_9000002744_18497cztM0_level2.evt modeM0/AS1A05_075T08_9000002744_18497cztM0_level2_quad_clean.evt
Size (bytes)268,885,44044,533,440
Size256.4 MB 42.5 MB
Events in quadrant A2,764,407265,923
Events in quadrant B1,624,036304,433
Events in quadrant C1,616,717289,812
Events in quadrant D1,939,093280,379

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101481
B066611
C066691
D077041

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0580
D0580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A291649216.872428%
B2916431.474623%
C2916632.160494%
D2916852.914952%

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 4241 2917 382 382 9.01% 13.10%
B 4241 2917 0 0 0.00% 0.00%
C 4241 2917 0 0 0.00% 0.00%
D 4241 2917 62 62 1.46% 2.13%

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 0 13 1287519 16754.22 377 370 76.8
A 15 192 21962 281.05 377 370 76.8
A 13 254 3797 44.61 377 370 76.8
B 12 111 8973 108.7 410 400 78.9
B 11 111 7638 91.77 410 400 78.9
B 10 245 7420 89.01 410 400 78.9
C 14 238 62069 662.23 395 399 93.1
C 7 247 9234 94.87 395 399 93.1
C 3 233 3600 34.37 395 399 93.1
D 1 52 200586 2075.06 396 385 96.5
D 7 238 180040 1862.11 396 385 96.5
D 7 223 56696 583.66 396 385 96.5

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