ASTROSAT CZTI

Data Quality Report

Orbit 50985

Creation date: 2025-03-02T13:07:12.680591
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/AS1C07_001T02_9000006452_50985cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50985cztM0_level2_quad_clean.evt
Size (bytes)517,440,96074,534,400
Size493.5 MB 71.1 MB
Events in quadrant A3,957,071496,436
Events in quadrant B4,349,364521,702
Events in quadrant C3,546,719479,781
Events in quadrant D6,883,544382,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011910
B011911
C01185
D01175

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0121
C0110
D0121

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163241009
B0178251038
C0154081003
D0274413287

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53882424.491463%
B53784498.348829%
C54102444.510166%
D5325103219.380282%

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 6799 5489 170 170 2.50% 3.10%
B 6729 5484 242 242 3.60% 4.41%
C 7026 5507 204 204 2.90% 3.70%
D 6642 5413 1117 1117 16.82% 20.64%

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 12 3 455583 3247.89 554 541 140.1
A 8 43 454836 3242.56 554 541 140.1
A 12 80 209838 1493.87 554 541 140.1
B 4 81 1813662 15656.46 544 526 115.8
B 2 176 111515 958.39 544 526 115.8
B 4 206 35500 302.0 544 526 115.8
C 1 44 456340 3082.19 533 527 147.9
C 13 3 328871 2220.25 533 527 147.9
C 4 5 267995 1808.61 533 527 147.9
D 8 176 3447206 25057.9 489 470 137.6
D 15 93 414837 3012.46 489 470 137.6
D 10 181 390550 2835.9 489 470 137.6

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