ASTROSAT CZTI

Data Quality Report

Orbit 20170729_G07_027T01_9000001414_level2

Creation date: 2025-11-15T16:12:34.874737
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/AS1G07_027T01_9000001414cztM0_level2.fits modeM0/AS1G07_027T01_9000001414cztM0_level2_quad_clean.evt
Size (bytes)139,746,240152,637,120
Size133.3 MB 145.6 MB
Events in quadrant A835,472954,576
Events in quadrant B813,416960,148
Events in quadrant C832,012909,257
Events in quadrant D682,094729,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0353610
B0323190
C0314460
D0567850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154793532.280509%
B154762631.699406%
C154791871.208088%
D15476175711.353063%

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 17336 15476 0 0 0.00% 0.00%
B 17336 15477 0 0 0.00% 0.00%
C 17335 15475 0 0 0.00% 0.00%
D 17335 15474 0 0 0.00% 0.00%

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 14 188 893 11.94 216 202 57.9
A 0 29 796 10.26 216 202 57.9
A 14 204 761 9.66 216 202 57.9
B 2 9 683 10.65 214 203 45.1
B 3 17 581 8.39 214 203 45.1
B 14 254 541 7.5 214 203 45.1
C 12 241 597 6.62 219 203 59.6
C 3 158 576 6.26 219 203 59.6
C 9 242 562 6.03 219 203 59.6
D 6 67 522 6.43 193 175 53.9
D 11 82 516 6.32 193 175 53.9
D 3 14 513 6.27 193 175 53.9

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