ASTROSAT CZTI

Data Quality Report

Orbit 51185

Creation date: 2025-03-17T08:36:53.838525
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_001T01_9000006454_51185cztM0_level2.fits modeM0/AS1C07_001T01_9000006454_51185cztM0_level2_quad_clean.evt
Size (bytes)1,515,833,280144,400,320
Size1.4 GB 137.7 MB
Events in quadrant A8,954,8311,079,923
Events in quadrant B10,831,5851,088,887
Events in quadrant C25,626,217404,492
Events in quadrant D9,758,605955,121

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348632
B0404775
C0843752
D0376822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A121825724.695452%
B12181150312.338888%
C12182820167.320637%
D1218210198.364801%

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 13692 12184 403 403 2.94% 3.31%
B 13691 12183 1022 1022 7.46% 8.39%
C 13692 12182 7682 7682 56.11% 63.06%
D 13692 12184 795 795 5.81% 6.52%

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 1178905 3810.54 1244 1212 309.1
A 13 248 925803 2991.6 1244 1212 309.1
A 14 254 349621 1127.31 1244 1212 309.1
B 5 172 2127208 8292.55 1211 1168 256.4
B 10 60 954357 3717.88 1211 1168 256.4
B 8 128 707301 2754.25 1211 1168 256.4
C 12 247 13521112 62790.67 783 779 215.3
C 4 12 5163090 23974.63 783 779 215.3
C 10 69 2441148 11333.48 783 779 215.3
D 3 12 1366415 4078.87 1193 1152 334.7
D 2 216 867700 2588.91 1193 1152 334.7
D 8 176 526463 1569.42 1193 1152 334.7

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