ASTROSAT CZTI

Data Quality Report

Orbit 52148

Creation date: 2025-05-19T21:27:14.250409
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/AS1C09_011T07_9000006470_52148cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52148cztM0_level2_quad_clean.evt
Size (bytes)842,304,96067,233,600
Size803.3 MB 64.1 MB
Events in quadrant A4,753,940541,100
Events in quadrant B4,151,409612,942
Events in quadrant C7,667,646421,917
Events in quadrant D14,146,96345,464

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181651
B0163981
C0268731
D0460311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A592962610.558273%
B59292594.368359%
C5929170228.706359%
D5929548492.494518%

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 7094 5929 505 505 7.12% 8.52%
B 7094 5929 149 149 2.10% 2.51%
C 7094 5929 1517 1517 21.38% 25.59%
D 7093 5928 5281 5281 74.45% 89.09%

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 95 754501 4910.03 617 602 153.5
A 14 254 563808 3668.07 617 602 153.5
A 15 239 400001 2601.22 617 602 153.5
B 4 170 429824 3287.68 621 601 130.6
B 10 254 221025 1688.36 621 601 130.6
B 5 185 186297 1422.36 621 601 130.6
C 15 224 4643079 31265.52 531 526 148.5
C 15 248 224224 1506.51 531 526 148.5
C 1 45 116030 777.87 531 526 148.5
D 6 42 11402517 142913.54 276 263 79.8
D 15 94 1125780 14107.0 276 263 79.8
D 15 43 122853 1536.52 276 263 79.8

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