ASTROSAT CZTI

Data Quality Report

Orbit 19500

Creation date: 2024-06-27T18:03:31.496106
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_062T01_9000002892_19500cztM0_level2.evt modeM0/AS1A05_062T01_9000002892_19500cztM0_level2_quad_clean.evt
Size (bytes)1,388,376,000214,960,320
Size1.3 GB 205.0 MB
Events in quadrant A9,173,8461,355,093
Events in quadrant B9,866,2041,370,396
Events in quadrant C10,649,2041,298,501
Events in quadrant D11,174,5511,277,265

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03560
B03560
C03560
D03560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377393
B0400223
C0425553
D0445403

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175373662.087016%
B175383822.178127%
C175384702.679895%
D175385723.261489%

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 21322 17538 106 106 0.50% 0.60%
B 21323 17539 68 68 0.32% 0.39%
C 21323 17539 72 72 0.34% 0.41%
D 21323 17540 297 297 1.39% 1.69%

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 5 16 291555 631.58 2299 2259 458.0
A 13 254 25813 51.42 2299 2259 458.0
A 0 226 20014 38.76 2299 2259 458.0
B 0 189 254962 602.66 2271 2219 419.4
B 7 220 210308 496.19 2271 2219 419.4
B 4 171 167073 393.09 2271 2219 419.4
C 5 112 610533 1221.96 2182 2202 497.8
C 9 221 504669 1009.31 2182 2202 497.8
C 3 233 362998 724.74 2182 2202 497.8
D 12 218 851945 1596.85 2224 2168 532.2
D 7 238 841385 1577.01 2224 2168 532.2
D 1 52 788421 1477.48 2224 2168 532.2

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