ASTROSAT CZTI

Data Quality Report

Orbit 18101

Creation date: 2024-06-27T17:44:56.485669
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_019T01_9000002688_18101cztM0_level2.evt modeM0/AS1A05_019T01_9000002688_18101cztM0_level2_quad_clean.evt
Size (bytes)1,026,826,560152,625,600
Size979.3 MB 145.6 MB
Events in quadrant A6,211,965967,660
Events in quadrant B6,592,703968,921
Events in quadrant C6,329,874929,941
Events in quadrant D11,063,041835,683

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272123
B0282073
C0272483
D0419083

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02700
B02700
C02700
D02700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133161090.818564%
B133171641.231509%
C133161581.186543%
D13316148511.151998%

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 15221 13319 1 1 0.01% 0.01%
B 15222 13320 25 25 0.16% 0.19%
C 15221 13319 3 3 0.02% 0.02%
D 15221 13318 1328 1328 8.72% 9.97%

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 4 2 53133 159.49 1598 1562 323.3
A 15 174 14562 40.2 1598 1562 323.3
A 0 226 14005 38.48 1598 1562 323.3
B 7 220 153822 496.45 1594 1552 306.7
B 3 64 80103 256.1 1594 1552 306.7
B 12 111 37214 116.27 1594 1552 306.7
C 14 238 234693 643.31 1534 1543 362.4
C 3 233 90677 245.94 1534 1543 362.4
C 9 160 15764 39.24 1534 1543 362.4
D 7 238 3577275 9986.75 1469 1426 358.1
D 11 176 1184610 3304.43 1469 1426 358.1
D 12 110 325115 904.01 1469 1426 358.1

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