ASTROSAT CZTI

Data Quality Report

Orbit 58992

Creation date: 2026-08-23T11:14:59.746798
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/AS1A14_004T07_9000006598_58992cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58992cztM0_level2_quad_clean.evt
Size (bytes)939,035,52068,474,880
Size895.5 MB 65.3 MB
Events in quadrant A4,575,669577,430
Events in quadrant B3,604,641670,198
Events in quadrant C15,103,48119,780
Events in quadrant D10,996,582372,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178951
B0148731
C0488171
D0369721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61986179.954824%
B61992283.678013%
C6199603497.338280%
D6198251340.545337%

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 7398 6199 508 508 6.87% 8.19%
B 7399 6200 109 109 1.47% 1.76%
C 7398 6198 5948 5948 80.40% 95.97%
D 7398 6199 2267 2267 30.64% 36.57%

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 15 233 1530726 9247.13 676 659 165.5
A 14 238 365326 2203.91 676 659 165.5
A 8 249 16184 93.83 676 659 165.5
B 6 255 517074 3485.84 696 670 148.1
B 3 238 100663 674.98 696 670 148.1
B 8 234 42959 285.46 696 670 148.1
C 15 219 14205972 276199.93 183 181 51.4
C 9 38 138374 2686.85 183 181 51.4
C 13 3 17727 341.14 183 181 51.4
D 12 110 8015142 46881.82 600 574 171.0
D 2 120 146948 856.23 600 574 171.0
D 6 239 121501 707.37 600 574 171.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct